MESON Chess Problem Database
Problem Display
PID: 57604 (8/K2R4/4P3/1p6/1Bb3P1/2Q1pp1B/2P1k2p/R2NNrbr w - - 0 1)
Whalley, JR
Chess Life, 1957
#2
11 + 9
SOLUTION
- SOUND
- Sets
- 1...Rxe1
- 2.Qxe1#
- 1...Rf2
- 2.Qxe3#
- 1...Ba2
- 2.Qd3#
- 1...Bb3
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Bd5
- 2.Qd3#
- 1...Bxe6
- 2.Qd3#
- 1...f2
- 2.Qxe3#
- 1...Rxe1
- Tries
- 1.Ka6?
- 1...Rxe1
- 2.Qxe1#
- 1...Bxe6
- 2.Qd3#
- 1...Rf2
- 2.Qxe3#
- 1...Ba2
- 2.Qd3#
- 1...Bb3
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Bd5
- 2.Qd3#
- 1...f2
- 2.Qxe3#
- 1...Bf2!
- 1...Rxe1
- 1.Kb6?
- 1...Rxe1
- 2.Qxe1#
- 1...Bxe6
- 2.Qd3#
- 1...Rf2
- 2.Qxe3#
- 1...Ba2
- 2.Qd3#
- 1...Bb3
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Bd5
- 2.Qd3#
- 1...f2
- 2.Qxe3#
- 1...Bf2!
- 1...Rxe1
- 1.Kb8?
- 1...Rxe1
- 2.Qxe1#
- 1...Bxe6
- 2.Qd3#
- 1...Rf2
- 2.Qxe3#
- 1...Ba2
- 2.Qd3#
- 1...Bb3
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Bd5
- 2.Qd3#
- 1...f2
- 2.Qxe3#
- 1...Bf2!
- 1...Rxe1
- 1.Bg2?
- 1...Rxe1
- 2.Qxe1#
- 1...Bxe6
- 2.Qd3#
- 1...Bf2
- 2.Bxf3#
- 1...Rf2
- 2.Qxe3#
- 1...Ba2
- 2.Qd3#
- 1...Bb3
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Bd5
- 2.Qd3#
- 1...f2
- 2.Bf3#
- 2.Qxe3#
- 1...fxg2!
- 1...Rxe1
- 1.Rb1?
- 1...Rxe1
- 2.Qxe1#
- 1...Bxe6
- 2.Qd3#
- 1...Rf2
- 2.Qxe3#
- 1...Ba2
- 2.Qd3#
- 1...Bb3
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Bd5
- 2.Qd3#
- 1...f2
- 2.Qxe3#
- 1...Bf2!
- 1...Rxe1
- 1.Rc1?
- 1...Rxe1
- 2.Qxe1#
- 1...Bxe6
- 2.Qd3#
- 1...Rf2
- 2.Qxe3#
- 1...Ba2
- 2.Qd3#
- 1...Bb3
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Bd5
- 2.Qd3#
- 1...f2
- 2.Qxe3#
- 1...Bf2!
- 1...Rxe1
- 1.Ra2?
- 1...Rxe1
- 2.Qxe1#
- 1...Bxa2
- 2.Qd3#
- 1...Bxe6
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Bd5
- 2.Qd3#
- 1...Rf2
- 2.Qxe3#
- 1...Bb3
- 2.Qd3#
- 2.cxb3#
- 1...f2
- 2.Qxe3#
- 1...Bf2!
- 1...Rxe1
- 1.Ra3?
- 1...Rxe1
- 2.Qxe1#
- 1...Bxe6
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Bd5
- 2.Qd3#
- 1...Rf2
- 2.Qxe3#
- 1...Ba2
- 2.Qd3#
- 1...Bb3
- 2.Qd3#
- 1...f2
- 2.Qxe3#
- 1...Bf2!
- 1...Rxe1
- 1.Ra4?
- 1...Rxe1
- 2.Qxe1#
- 1...Bxe6
- 2.Qd3#
- 1...bxa4
- 2.Qxc4#
- 1...Bd3
- 2.Qxd3#
- 1...Bd5
- 2.Qd3#
- 1...Rf2
- 2.Qxe3#
- 1...Ba2
- 2.Qd3#
- 1...Bb3
- 2.Qd3#
- 1...f2
- 2.Qxe3#
- 1...Bf2!
- 1...Rxe1
- 1.Ra5?
- 1...Rxe1
- 2.Qxe1#
- 1...Bxe6
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Bd5
- 2.Qd3#
- 1...Rf2
- 2.Qxe3#
- 1...Ba2
- 2.Qd3#
- 1...Bb3
- 2.Qd3#
- 1...f2
- 2.Qxe3#
- 1...Bf2!
- 1...Rxe1
- 1.Ra6?
- 1...Rxe1
- 2.Qxe1#
- 1...Bxe6
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Bd5
- 2.Qd3#
- 1...Rf2
- 2.Qxe3#
- 1...Ba2
- 2.Qd3#
- 1...Bb3
- 2.Qd3#
- 1...f2
- 2.Qxe3#
- 1...Bf2!
- 1...Rxe1
- 1.Rd2+?
- 1...Kxe1
- 2.Sb2#
- 2.Sf2#
- 2.Sxe3#
- 2.Rf2#
- 2.Rg2#
- 2.Rxh2#
- 1...exd2+!
- 1...Kxe1
- 1.Rd4?
- 1...Rxe1
- 2.Qxe1#
- 1...Bxe6
- 2.Qd3#
- 1...Rf2
- 2.Qxe3#
- 1...Ba2
- 2.Qd3#
- 1...Bb3
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Bd5
- 2.Qd3#
- 1...f2
- 2.Qxe3#
- 1...Bf2!
- 1...Rxe1
- 1.Rd5?
- 1...Rxe1
- 2.Qxe1#
- 1...Bxd5
- 2.Qd3#
- 1...Rf2
- 2.Qxe3#
- 1...Ba2
- 2.Qd3#
- 1...Bb3
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...f2
- 2.Qxe3#
- 1...Bf2!
- 1...Rxe1
- 1.Rd6?
- 1...Rxe1
- 2.Qxe1#
- 1...Bxe6
- 2.Qd3#
- 1...Rf2
- 2.Qxe3#
- 1...Ba2
- 2.Qd3#
- 1...Bb3
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Bd5
- 2.Qd3#
- 1...f2
- 2.Qxe3#
- 1...Bf2!
- 1...Rxe1
- 1.Rb7?
- 1...Rxe1
- 2.Qxe1#
- 1...Bxe6
- 2.Qd3#
- 1...Rf2
- 2.Qxe3#
- 1...Ba2
- 2.Qd3#
- 1...Bb3
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Bd5
- 2.Qd3#
- 1...f2
- 2.Qxe3#
- 1...Bf2!
- 1...Rxe1
- 1.Rc7?
- 1...Rxe1
- 2.Qxe1#
- 1...Bxe6
- 2.Qd3#
- 1...Rf2
- 2.Qxe3#
- 1...Ba2
- 2.Qd3#
- 1...Bb3
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Bd5
- 2.Qd3#
- 1...f2
- 2.Qxe3#
- 1...Bf2!
- 1...Rxe1
- 1.Re7?
- 1...Rxe1
- 2.Qxe1#
- 1...Bxe6
- 2.Qd3#
- 1...Rf2
- 2.Qxe3#
- 1...Ba2
- 2.Qd3#
- 1...Bb3
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Bd5
- 2.Qd3#
- 1...f2
- 2.Qxe3#
- 1...Bf2!
- 1...Rxe1
- 1.Rf7?
- 1...Rxe1
- 2.Qxe1#
- 1...Bxe6
- 2.Qd3#
- 1...Rf2
- 2.Qxe3#
- 1...Ba2
- 2.Qd3#
- 1...Bb3
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Bd5
- 2.Qd3#
- 1...f2
- 2.Qxe3#
- 1...Bf2!
- 1...Rxe1
- 1.Rg7?
- 1...Rxe1
- 2.Qxe1#
- 1...Bxe6
- 2.Qd3#
- 1...Rf2
- 2.Qxe3#
- 1...Ba2
- 2.Qd3#
- 1...Bb3
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Bd5
- 2.Qd3#
- 1...f2
- 2.Qxe3#
- 1...Bf2!
- 1...Rxe1
- 1.Rh7?
- 1...Rxe1
- 2.Qxe1#
- 1...Bxe6
- 2.Qd3#
- 1...Rf2
- 2.Qxe3#
- 1...Ba2
- 2.Qd3#
- 1...Bb3
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Bd5
- 2.Qd3#
- 1...f2
- 2.Qxe3#
- 1...Bf2!
- 1...Rxe1
- 1.Rd8?
- 1...Rxe1
- 2.Qxe1#
- 1...Bxe6
- 2.Qd3#
- 1...Rf2
- 2.Qxe3#
- 1...Ba2
- 2.Qd3#
- 1...Bb3
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Bd5
- 2.Qd3#
- 1...f2
- 2.Qxe3#
- 1...Bf2!
- 1...Rxe1
- 1.Qd4?
- 1...Bxe6
- 2.Qd3#
- 1...Bf2
- 2.Sc3#
- 1...Rf2
- 2.Sc3#
- 2.Qxe3#
- 1...Ba2
- 2.Qd3#
- 1...Bb3
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Bd5
- 2.Qd3#
- 1...f2
- 2.Sc3#
- 2.Qxe3#
- 1...Rxe1!
- 1...Bxe6
- 1.g5?
- 1...Rxe1
- 2.Qxe1#
- 1...Bxe6
- 2.Qd3#
- 1...Rf2
- 2.Qxe3#
- 1...Ba2
- 2.Qd3#
- 1...Bb3
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Bd5
- 2.Qd3#
- 1...f2
- 2.Bg4#
- 2.Qxe3#
- 1...Bf2!
- 1...Rxe1
- 1.e7?
- 1...Rxe1
- 2.Qxe1#
- 1...Rf2
- 2.Qxe3#
- 1...Ba2
- 2.Qd3#
- 1...Bb3
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Bd5
- 2.Qd3#
- 1...Be6
- 2.Qd3#
- 1...Bf7
- 2.Qd3#
- 1...Bg8
- 2.Qd3#
- 1...f2
- 2.Qxe3#
- 1...Bf2!
- 1...Rxe1
- 1.Ka6?
- Keys
- 1.Qb2!
- 1...Rxe1
- 2.c3#
- 1...Bxe6
- 2.c4#
- 1...Bf2
- 2.Sc3#
- 1...Rf2
- 2.Sc3#
- 1...Ba2
- 2.c4#
- 1...Bb3
- 2.cxb3#
- 1...Bd3
- 2.cxd3#
- 1...Bd5
- 2.c4#
- 1...f2
- 2.Sc3#
- 1...Rxe1
- 1.Qb2!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 8
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(a);OGATE,XS(C)::QAR1(E),XR(a)
- R(a);S_CUTB(b)::QAR1(E),XP(f)
- B(h);N_GUARD::QAB1(E)
- B(h);N_GUARD::QAB1(E),XB(h)
- B(h);N_GUARD,XP(I)::QAB1(E)
- P(g);S_CUTB(b)::QAR1(E),XP(f)
- Tries
- Try
- K(J);P-FLIGHT
- Vars
- R(a);OGATE,XS(C)::QAR1(E),XR(a)
- B(h);N_GUARD,XP(I)::QAB1(E)
- R(a);S_CUTB(b)::QAR1(E),XP(f)
- B(h);N_GUARD::QAB1(E)
- B(h);N_GUARD::QAB1(E),XB(h)
- P(g);S_CUTB(b)::QAR1(E),XP(f)
- Refutation
- B(b);
- Try
- K(J);S_FLIGHT
- Vars
- R(a);OGATE,XS(C)::QAR1(E),XR(a)
- B(h);N_GUARD,XP(I)::QAB1(E)
- R(a);S_CUTB(b)::QAR1(E),XP(f)
- B(h);N_GUARD::QAB1(E)
- B(h);N_GUARD::QAB1(E),XB(h)
- P(g);S_CUTB(b)::QAR1(E),XP(f)
- Refutation
- B(b);
- Try
- K(J);S_FLIGHT
- Vars
- R(a);OGATE,XS(C)::QAR1(E),XR(a)
- B(h);N_GUARD,XP(I)::QAB1(E)
- R(a);S_CUTB(b)::QAR1(E),XP(f)
- B(h);N_GUARD::QAB1(E)
- B(h);N_GUARD::QAB1(E),XB(h)
- P(g);S_CUTB(b)::QAR1(E),XP(f)
- Refutation
- B(b);
- Try
- B(F);
- Vars
- R(a);OGATE,XS(C)::QAR1(E),XR(a)
- B(h);N_GUARD,XP(I)::QAB1(E)
- B(b);S_CUTR(a)::B(F),XP(g)
- R(a);S_CUTB(b)::QAR1(E),XP(f)
- B(h);N_GUARD::QAB1(E)
- B(h);N_GUARD::QAB1(E),XB(h)
- Refutation
- P(g);XB(F)
- Try
- R(A);
- Vars
- R(a);OGATE,XS(C)::QAR1(E),XR(a)
- B(h);N_GUARD,XP(I)::QAB1(E)
- R(a);S_CUTB(b)::QAR1(E),XP(f)
- B(h);N_GUARD::QAB1(E)
- B(h);N_GUARD::QAB1(E),XB(h)
- P(g);S_CUTB(b)::QAR1(E),XP(f)
- Refutation
- B(b);
- Try
- R(A);
- Vars
- R(a);OGATE,XS(C)::QAR1(E),XR(a)
- B(h);N_GUARD,XP(I)::QAB1(E)
- R(a);S_CUTB(b)::QAR1(E),XP(f)
- B(h);N_GUARD::QAB1(E)
- B(h);N_GUARD::QAB1(E),XB(h)
- P(g);S_CUTB(b)::QAR1(E),XP(f)
- Refutation
- B(b);
- Try
- R(A);
- Vars
- R(a);OGATE,XS(C)::QAR1(E),XR(a)
- B(h);N_GUARD,XR(A)::QAB1(E)
- B(h);N_GUARD,XP(I)::QAB1(E)
- B(h);N_GUARD::QAB1(E),XB(h)
- B(h);N_GUARD::QAB1(E)
- R(a);S_CUTB(b)::QAR1(E),XP(f)
- P(g);S_CUTB(b)::QAR1(E),XP(f)
- Refutation
- B(b);
- Try
- R(A);
- Vars
- R(a);OGATE,XS(C)::QAR1(E),XR(a)
- B(h);N_GUARD,XP(I)::QAB1(E)
- B(h);N_GUARD::QAB1(E),XB(h)
- B(h);N_GUARD::QAB1(E)
- R(a);S_CUTB(b)::QAR1(E),XP(f)
- P(g);S_CUTB(b)::QAR1(E),XP(f)
- Refutation
- B(b);
- Try
- R(A);
- Vars
- R(a);OGATE,XS(C)::QAR1(E),XR(a)
- B(h);N_GUARD,XP(I)::QAB1(E)
- P(i);N_GUARD,XR(A)::QAB(E),XB(h)
- B(h);N_GUARD::QAB1(E),XB(h)
- B(h);N_GUARD::QAB1(E)
- R(a);S_CUTB(b)::QAR1(E),XP(f)
- P(g);S_CUTB(b)::QAR1(E),XP(f)
- Refutation
- B(b);
- Try
- R(A);
- Vars
- R(a);OGATE,XS(C)::QAR1(E),XR(a)
- B(h);N_GUARD,XP(I)::QAB1(E)
- B(h);N_GUARD::QAB1(E),XB(h)
- B(h);N_GUARD::QAB1(E)
- R(a);S_CUTB(b)::QAR1(E),XP(f)
- P(g);S_CUTB(b)::QAR1(E),XP(f)
- Refutation
- B(b);
- Try
- R(A);
- Vars
- R(a);OGATE,XS(C)::QAR1(E),XR(a)
- B(h);N_GUARD,XP(I)::QAB1(E)
- B(h);N_GUARD::QAB1(E),XB(h)
- B(h);N_GUARD::QAB1(E)
- R(a);S_CUTB(b)::QAR1(E),XP(f)
- P(g);S_CUTB(b)::QAR1(E),XP(f)
- Refutation
- B(b);
- Try
- R(K);CHECK
- Refutation
- P(f);CHECK,XR(K)
- Try
- R(K);
- Vars
- R(a);OGATE,XS(C)::QAR1(E),XR(a)
- B(h);N_GUARD,XP(I)::QAB1(E)
- R(a);S_CUTB(b)::QAR1(E),XP(f)
- B(h);N_GUARD::QAB1(E)
- B(h);N_GUARD::QAB1(E),XB(h)
- P(g);S_CUTB(b)::QAR1(E),XP(f)
- Refutation
- B(b);
- Try
- R(K);
- Vars
- R(a);OGATE,XS(C)::QAR1(E),XR(a)
- B(h);N_GUARD,XR(K)::QAB1(E)
- R(a);S_CUTB(b)::QAR1(E),XP(f)
- B(h);N_GUARD::QAB1(E)
- B(h);N_GUARD::QAB1(E),XB(h)
- P(g);S_CUTB(b)::QAR1(E),XP(f)
- Refutation
- B(b);
- Try
- R(K);
- Vars
- R(a);OGATE,XS(C)::QAR1(E),XR(a)
- B(h);N_GUARD,XP(I)::QAB1(E)
- R(a);S_CUTB(b)::QAR1(E),XP(f)
- B(h);N_GUARD::QAB1(E)
- B(h);N_GUARD::QAB1(E),XB(h)
- P(g);S_CUTB(b)::QAR1(E),XP(f)
- Refutation
- B(b);
- Try
- R(K);
- Vars
- R(a);OGATE,XS(C)::QAR1(E),XR(a)
- B(h);N_GUARD,XP(I)::QAB1(E)
- R(a);S_CUTB(b)::QAR1(E),XP(f)
- B(h);N_GUARD::QAB1(E)
- B(h);N_GUARD::QAB1(E),XB(h)
- P(g);S_CUTB(b)::QAR1(E),XP(f)
- Refutation
- B(b);
- Try
- R(K);
- Vars
- R(a);OGATE,XS(C)::QAR1(E),XR(a)
- B(h);N_GUARD,XP(I)::QAB1(E)
- R(a);S_CUTB(b)::QAR1(E),XP(f)
- B(h);N_GUARD::QAB1(E)
- B(h);N_GUARD::QAB1(E),XB(h)
- P(g);S_CUTB(b)::QAR1(E),XP(f)
- Refutation
- B(b);
- Try
- R(K);
- Vars
- R(a);OGATE,XS(C)::QAR1(E),XR(a)
- B(h);N_GUARD,XP(I)::QAB1(E)
- R(a);S_CUTB(b)::QAR1(E),XP(f)
- B(h);N_GUARD::QAB1(E)
- B(h);N_GUARD::QAB1(E),XB(h)
- P(g);S_CUTB(b)::QAR1(E),XP(f)
- Refutation
- B(b);
- Try
- R(K);
- Vars
- R(a);OGATE,XS(C)::QAR1(E),XR(a)
- B(h);N_GUARD,XP(I)::QAB1(E)
- R(a);S_CUTB(b)::QAR1(E),XP(f)
- B(h);N_GUARD::QAB1(E)
- B(h);N_GUARD::QAB1(E),XB(h)
- P(g);S_CUTB(b)::QAR1(E),XP(f)
- Refutation
- B(b);
- Try
- R(K);
- Vars
- R(a);OGATE,XS(C)::QAR1(E),XR(a)
- B(h);N_GUARD,XP(I)::QAB1(E)
- R(a);S_CUTB(b)::QAR1(E),XP(f)
- B(h);N_GUARD::QAB1(E)
- B(h);N_GUARD::QAB1(E),XB(h)
- P(g);S_CUTB(b)::QAR1(E),XP(f)
- Refutation
- B(b);
- Try
- R(K);
- Vars
- R(a);OGATE,XS(C)::QAR1(E),XR(a)
- B(h);N_GUARD,XP(I)::QAB1(E)
- R(a);S_CUTB(b)::QAR1(E),XP(f)
- B(h);N_GUARD::QAB1(E)
- B(h);N_GUARD::QAB1(E),XB(h)
- P(g);S_CUTB(b)::QAR1(E),XP(f)
- Refutation
- B(b);
- Try
- R(K);
- Vars
- R(a);OGATE,XS(C)::QAR1(E),XR(a)
- B(h);N_GUARD,XP(I)::QAB1(E)
- R(a);S_CUTB(b)::QAR1(E),XP(f)
- B(h);N_GUARD::QAB1(E)
- B(h);N_GUARD::QAB1(E),XB(h)
- P(g);S_CUTB(b)::QAR1(E),XP(f)
- Refutation
- B(b);
- Try
- Q(E);
- Vars
- B(h);N_GUARD,XP(I)::QAB1(E)
- B(b);SBLOCK::S(B)
- B(h);N_GUARD::QAB1(E)
- B(h);N_GUARD::QAB1(E),XB(h)
- Refutation
- R(a);XS(C)
- Try
- P(H);
- Vars
- R(a);OGATE,XS(C)::QAR1(E),XR(a)
- B(h);N_GUARD,XP(I)::QAB1(E)
- R(a);S_CUTB(b)::QAR1(E),XP(f)
- B(h);N_GUARD::QAB1(E)
- B(h);N_GUARD::QAB1(E),XB(h)
- Refutation
- B(b);
- Try
- P(I);
- Vars
- R(a);OGATE,XS(C)::QAR1(E),XR(a)
- R(a);S_CUTB(b)::QAR1(E),XP(f)
- B(h);N_GUARD::QAB1(E)
- B(h);N_GUARD::QAB1(E),XB(h)
- P(g);S_CUTB(b)::QAR1(E),XP(f)
- Refutation
- B(b);
- Try
- Actual
- Q(E);
- Vars
- R(a);SBLOCK,XS(C)::QAR(E)+P(D)
- B(h);OGATE,XP(I)::QAR(E)+P(D)
- B(b);SBLOCK::S(B)
- R(a);SBLOCK::S(B)
- B(h);OGATE::QAR(E)+P(D)
- B(h);OGATE::QAR(E)+P(D),XB(h)
- P(g);SBLOCK::S(B)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).