MESON Chess Problem Database
Problem Display
PID: 106759 (8/3p2N1/2p2pp1/R3P1p1/QP1k1P2/1K2p3/p1Bp3B/5R2 w - - 0 1)
Fletcher, L Elliott
The Field, 1954
(First published on Thu Dec 2 1954)
#2
10 + 9
SOLUTION
- SOUND
- Sets
- 1...a1Q
- 2.Qxa1#
- 1...a1S+
- 2.Qxa1#
- 1...a1B
- 2.Qxa1#
- 1...a1R
- 2.Qxa1#
- 1...d1Q
- 2.Rxd1#
- 1...d1S
- 2.Rxd1#
- 1...d1B
- 2.Rxd1#
- 1...d1R
- 2.Rxd1#
- 1...e2
- 2.Bg1#
- 1...gxf4
- 2.Rxf4#
- 1...c5
- 2.Qxd7#
- 1...d5
- 2.Se6#
- 1...d6
- 2.Se6#
- 1...a1Q
- Tries
- 1.Rd5+?
- 1...cxd5
- 2.Qa7#
- 1...Kxd5!
- 1...cxd5
- 1.Qxc6?
- threat
- 2.Rd5#
- 2.Qe4#
- 2.Qd5#
- 2.Qxd7#
- 2.Qc3#
- 2.Qc4#
- 2.Qc5#
- 2.Qb6#
- 2.Qd6#
- 1...dxc6
- 2.Se6#
- 1...e2
- 2.Bg1#
- 2.Qe4#
- 2.Qc3#
- 2.Qc5#
- 2.Qb6#
- 1...a1Q
- 2.Rd5#
- 2.Qe4#
- 2.Qd5#
- 2.Qxd7#
- 2.Qc4#
- 2.Qc5#
- 2.Qb6#
- 2.Qd6#
- 1...a1B
- 2.Rd5#
- 2.Qe4#
- 2.Qd5#
- 2.Qxd7#
- 2.Qc4#
- 2.Qc5#
- 2.Qb6#
- 2.Qd6#
- 1...d1S
- 2.Rxd1#
- 2.Rd5#
- 2.Qe4#
- 2.Qd5#
- 2.Qxd7#
- 2.Qc4#
- 2.Qc5#
- 2.Qb6#
- 2.Qd6#
- 1...f5
- 2.Rd5#
- 2.Qd5#
- 2.Qxd7#
- 2.Qc3#
- 2.Qc4#
- 2.Qc5#
- 2.Qb6#
- 2.Qd6#
- 1...d5
- 2.Se6#
- 2.Rxd5#
- 2.Qxd5#
- 2.Qc3#
- 2.Qc5#
- 2.Qb6#
- 1...d6
- 2.Se6#
- 2.Rd5#
- 2.Qe4#
- 2.Qd5#
- 2.Qc3#
- 2.Qc4#
- 2.Qb6#
- 2.Qxd6#
- 1...a1S+!
- threat
- 1.Qxa2?
- threat
- 2.Qa1#
- 2.Qb2#
- 1...e2
- 2.Bg1#
- 1...d1Q
- 2.Rxd1#
- 2.Qb2#
- 1...d1S
- 2.Rxd1#
- 1...d1R
- 2.Rxd1#
- 2.Qb2#
- 1...c5!
- threat
- 1.Qa3?
- threat
- 2.Qb2#
- 1...a1S+
- 2.Qxa1#
- 1...e2
- 2.Bg1#
- 1...a1Q
- 2.Qxa1#
- 1...a1B
- 2.Qxa1#
- 1...d1S
- 2.Rxd1#
- 1...c5!
- threat
- 1.b5+?
- 1...Kd5
- 2.Qc4#
- 2.bxc6#
- 1...Kc5!
- 1...Kd5
- 1.fxg5?
- threat
- 2.Rf4#
- 1...a1S+
- 2.Qxa1#
- 1...fxe5
- 2.Bxe5#
- 1...e2
- 2.Bg1#
- 1...c5
- 2.Qxd7#
- 1...d5
- 2.Se6#
- 1...fxg5!
- threat
- 1.exf6?
- 1...a1S+
- 2.Qxa1#
- 1...gxf4
- 2.Rxf4#
- 1...e2
- 2.Bg1#
- 1...c5
- 2.Qxd7#
- 1...a1Q
- 2.Qxa1#
- 1...a1B
- 2.Qxa1#
- 1...a1R
- 2.Qxa1#
- 1...d1Q
- 2.Rxd1#
- 1...d1S
- 2.Rxd1#
- 1...d1B
- 2.Rxd1#
- 1...d1R
- 2.Rxd1#
- 1...d5
- 2.Se6#
- 1...d6
- 2.Se6#
- 1...g4!
- 1...a1S+
- 1.Rd5+?
- Keys
- 1.f5!
- 1...a1S+
- 2.Qxa1#
- 1...fxe5
- 2.Bxe5#
- 1...gxf5
- 2.Sxf5#
- 1...e2
- 2.Bg1#
- 1...c5
- 2.Qxd7#
- 1...a1Q
- 2.Qxa1#
- 1...a1B
- 2.Qxa1#
- 1...a1R
- 2.Qxa1#
- 1...d1Q
- 2.Rxd1#
- 1...d1S
- 2.Rxd1#
- 1...d1B
- 2.Rxd1#
- 1...d1R
- 2.Rxd1#
- 1...g4
- 2.Rf4#
- 1...d5
- 2.Se6#
- 1...d6
- 2.Se6#
- 1...a1S+
- 1.f5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 1
- Sets
- P(a);OGATE::QAB(E),XQ(a)
- P(a);CHECK,OGATE::QAB(E),XS(a)
- P(a);OGATE::QAB(E),XB(a)
- P(a);OGATE::QAB(E),XR(a)
- P(b);OGATEB,P_PINB(B)::R(A),XQ(b)
- P(b);OGATEB::R(A),XS(b)
- P(b);OGATEB,P_PINB(B)::R(A),XB(b)
- P(b);OGATEB::R(A),XR(b)
- P(c);OGATEB::B(C)
- P(e);OGATE,XP(G)::R(A),XP(e)
- P(f);OGATE::QAR(E),XP(i)
- P(i);N_GUARD::S(J)
- Tries
- Try
- R(H);CHECK
- Vars
- P(f);SBLOCK,XR(H)::QAB(E)
- Refutation
- K(d);P-FLIGHT,XR(H)
- Try
- Q(E);XP(f)
- Threat
- DUALS(9)
- Vars
- P(i);N_GUARD,XQ(E)::S(J)
- Refutation
- P(a);CHECK
- Try
- Q(E);XP(a)
- Threat
- DUALS(2)
- Vars
- P(c);OGATEB::B(C)
- P(b);OGATEB::R(A),XS(b)
- Refutation
- P(f);
- Try
- Q(E);
- Threat
- QAB(E)
- Vars
- P(a);CHECK,OGATE::QAB(E),XS(a)
- P(c);OGATEB::B(C)
- P(a);OGATE::QAB(E),XQ(a)
- P(a);OGATE::QAB(E),XB(a)
- P(b);OGATEB::R(A),XS(b)
- Refutation
- P(f);
- Try
- P(F);CHECK
- Refutation
- K(d);S_FLIGHT
- Try
- P(G);XP(e)
- Threat
- R(A)
- Vars
- P(a);CHECK,OGATE::QAB(E),XS(a)
- P(g);OGATE,XP(I)::B(C),XP(g)
- P(c);OGATEB::B(C)
- P(f);OGATE::QAR(E),XP(i)
- P(i);N_GUARD::S(J)
- Refutation
- P(g);XP(G)
- Try
- P(I);XP(g)
- Vars
- P(a);CHECK,OGATE::QAB(E),XS(a)
- P(e);OGATE,XP(G)::R(A),XP(e)
- P(c);OGATEB::B(C)
- P(f);OGATE::QAR(E),XP(i)
- P(a);OGATE::QAB(E),XQ(a)
- P(a);OGATE::QAB(E),XB(a)
- P(a);OGATE::QAB(E),XR(a)
- P(b);OGATEB,P_PINB(B)::R(A),XQ(b)
- P(b);OGATEB::R(A),XS(b)
- P(b);OGATEB,P_PINB(B)::R(A),XB(b)
- P(b);OGATEB::R(A),XR(b)
- P(i);N_GUARD::S(J)
- Refutation
- P(e);
- Try
- Actual
- P(G);
- Vars
- P(a);CHECK,OGATE::QAB(E),XS(a)
- P(g);OGATE,XP(I)::B(C),XP(g)
- P(h);XP(G)::S(J),XP(h)
- P(c);OGATEB::B(C)
- P(f);OGATE::QAR(E),XP(i)
- P(a);OGATE::QAB(E),XQ(a)
- P(a);OGATE::QAB(E),XB(a)
- P(a);OGATE::QAB(E),XR(a)
- P(b);OGATEB,P_PINB(B)::R(A),XQ(b)
- P(b);OGATEB::R(A),XS(b)
- P(b);OGATEB,P_PINB(B)::R(A),XB(b)
- P(b);OGATEB::R(A),XR(b)
- P(e);N_GUARD::R(A)
- P(i);N_GUARD::S(J)
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