MESON Chess Problem Database
Problem Display
PID: 140131 (4R3/3pR3/Q2B3b/q6b/r2k3r/1B1Np3/N1P2P2/1K2n3 w - - 0 1)
Wolfs, WJ
7th Comm., Probleemblad, 1968
#2
10 + 9
SOLUTION
- SOUND
- Sets
- 1...Qd2
- 2.Bc5#
- 2.Qb6#
- 1...Qb6
- 2.Qxb6#
- 2.c3#
- 1...Qd8
- 2.Bc5#
- 2.Qxa4#
- 2.c3#
- 1...Qc5
- 2.Bxc5#
- 1...Qd5
- 2.c3#
- 1...Qe5
- 2.Qxa4#
- 1...Qf5
- 2.Qxa4#
- 2.c3#
- 1...Qg5
- 2.Qxa4#
- 2.c3#
- 1...Qxa6
- 2.Bc5#
- 1...Rxa2
- 2.Qc4#
- 1...Ra3
- 2.Qc4#
- 1...Rb4
- 2.c3#
- 1...Rc4
- 2.Qxc4#
- 1...Rh1
- 2.Re4#
- 1...Rh2
- 2.Re4#
- 1...Rh3
- 2.Re4#
- 1...Re4
- 2.Rxe4#
- 1...Rf4
- 2.fxe3#
- 1...Bg4
- 2.Re4#
- 1...Bf4
- 2.Re4#
- 1...Bg7
- 2.fxe3#
- 1...Bf8
- 2.fxe3#
- 1...Sxd3
- 2.Qxd3#
- 1...Qd2
- Tries
- 1.Bb4?
- threat
- 2.Qc4#
- 2.c3#
- 1...Qxb4
- 2.Qf6#
- 1...Qxa6
- 2.Bc3#
- 2.Bc5#
- 1...Rxb4
- 2.c3#
- 1...Sxc2
- 2.Qc4#
- 1...Qe5
- 2.Qc4#
- 1...Qb5
- 2.Bc3#
- 1...Qc5
- 2.Bxc5#
- 1...Qd5
- 2.Bc3#
- 2.c3#
- 1...Bf7
- 2.c3#
- 1...d5
- 2.Qf6#
- 2.c3#
- 1...Qc7!
- threat
- 1.Bf4?
- threat
- 2.Re4#
- 2.fxe3#
- 1...Rxa2
- 2.Qc4#
- 1...Rxf4
- 2.fxe3#
- 1...Bxe8
- 2.fxe3#
- 1...Bxf4
- 2.Re4#
- 1...Sxc2
- 2.Re4#
- 1...exf2
- 2.Re4#
- 1...Qe5
- 2.Qxa4#
- 1...Rc4
- 2.Qxc4#
- 1...Qd2
- 2.Re4#
- 2.Rxd7#
- 2.Qb6#
- 2.Qd6#
- 2.Qf6#
- 1...Qd5
- 2.c3#
- 2.fxe3#
- 1...Qf5
- 2.Qxa4#
- 2.c3#
- 2.fxe3#
- 1...Rh3
- 2.Re4#
- 1...Bf3
- 2.fxe3#
- 1...Bg6
- 2.fxe3#
- 1...Sg2
- 2.Re4#
- 1...e2
- 2.Re4#
- 1...d5
- 2.Qf6#
- 2.fxe3#
- 1...Sxd3!
- threat
- 1.Be5+?
- 1...Qxe5
- 2.Qxa4#
- 1...Ke4!
- 1...Qxe5
- 1.Rxd7?
- threat
- 2.Bc5#
- 1...Rxa2
- 2.Qc4#
- 1...Sxd3
- 2.Qxd3#
- 1...Qe5
- 2.Qxa4#
- 1...Qc5
- 2.Bxc5#
- 1...Bxe8!
- threat
- 1.Qb5?
- threat
- 2.Bc5#
- 1...Rxa2
- 2.Qc4#
- 1...Sxd3
- 2.Qxd3#
- 1...Qc3
- 2.Qd5#
- 2.Qe5#
- 1...Qb4
- 2.Qd5#
- 2.Qe5#
- 1...Qb6
- 2.Qd5#
- 2.Qe5#
- 2.Qxb6#
- 2.c3#
- 1...Qc7
- 2.Qd5#
- 2.Qe5#
- 1...Qa7
- 2.Qd5#
- 2.Qe5#
- 2.c3#
- 1...Rc4
- 2.Qxc4#
- 1...Qxb5!
- threat
- 1.Qxa5?
- threat
- 2.Bc5#
- 2.Qc3#
- 2.Qb6#
- 2.Qxa4#
- 2.Qc5#
- 2.Qd5#
- 2.Qe5#
- 1...Rxa2
- 2.Bc5#
- 2.Qb4#
- 2.Qc5#
- 2.Qe5#
- 1...Sxc2
- 2.Qc3#
- 2.Qd5#
- 1...Sxd3
- 2.Qc3#
- 2.Qd5#
- 2.c3#
- 1...Ra3
- 2.Bc5#
- 2.Qc3#
- 2.Qb4#
- 2.Qb6#
- 2.Qc5#
- 2.Qd5#
- 2.Qe5#
- 1...Rb4
- 2.Bc5#
- 2.Qxb4#
- 2.Qc5#
- 2.Qd5#
- 2.Qe5#
- 1...Rc4
- 2.Qe5#
- 1...Re4
- 2.Bc5#
- 2.Rxe4#
- 2.Qc3#
- 2.Qb6#
- 2.Qxa4#
- 2.Qc5#
- 2.Qd5#
- 1...Bf3
- 2.Bc5#
- 2.Qc3#
- 2.Qb6#
- 2.Qxa4#
- 2.Qc5#
- 2.Qe5#
- 1...Bf7
- 2.Bc5#
- 2.Qc3#
- 2.Qb6#
- 2.Qc5#
- 2.Qe5#
- 1...Bf4
- 2.Bc5#
- 2.Re4#
- 2.Qc3#
- 2.Qb6#
- 2.Qxa4#
- 2.Qc5#
- 2.Qd5#
- 1...Bg7
- 2.Bc5#
- 2.Qc3#
- 2.Qb6#
- 2.Qxa4#
- 2.Qc5#
- 2.Qd5#
- 2.fxe3#
- 1...Sf3
- 2.Bc5#
- 2.Qc3#
- 2.Qb6#
- 2.Qxa4#
- 2.Qc5#
- 2.Qd5#
- 1...Rxa5!
- threat
- 1.Qb6+?
- 1...Qc5
- 2.Bxc5#
- 2.Qxc5#
- 1...Qxb6!
- 1...Qc5
- 1.Qa7+?
- 1...Qb6
- 2.Qxb6#
- 1...Qc5
- 2.Bxc5#
- 2.Qxc5#
- 1...Qxa7!
- 1...Qb6
- 1.Bb4?
- Keys
- 1.Sf4!
- threat
- 2.Re4#
- 2.fxe3#
- 1...Rxa2
- 2.Qc4#
- 1...Rxf4
- 2.fxe3#
- 1...Bxe8
- 2.Se2#
- 2.fxe3#
- 1...Bxf4
- 2.Re4#
- 1...Sxc2
- 2.Re4#
- 2.Qd3#
- 1...exf2
- 2.Re4#
- 1...Qe5
- 2.Qxa4#
- 1...Qc3
- 2.Re4#
- 1...Qd2
- 2.Re4#
- 2.Qb6#
- 1...Qd5
- 2.c3#
- 2.fxe3#
- 1...Qf5
- 2.Qxa4#
- 2.fxe3#
- 1...Rh3
- 2.Re4#
- 1...Bf3
- 2.fxe3#
- 1...Bg6
- 2.Se2#
- 2.fxe3#
- 1...Sg2
- 2.Re4#
- 2.Qd3#
- 1...e2
- 2.Re4#
- threat
- 1.Sf4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 13
- Sets
- Q(f);N_GUARD::B(H),XQ(f)
- Q(f);N_GUARD::P(C)
- Q(f);OGATE::QAR(G),XR(c)
- Q(f);N_GUARD,XQ(G)::B(H)
- R(c);N_GUARD,XS(B)::QAR1(G)
- R(c);N_GUARD::QAR1(G)
- R(c);P_PINB(E),S_CUTQ(f)::P(C)
- R(c);N_GUARD::QAR1(G),XR(c)
- R(e);N_GUARD::R1(I)
- R(e);N_GUARD::R1(I),XR(e)
- R(e);S_CUTB(h)::P(D),XP(b)
- B(g);S_CUTR(e)::R1(I)
- B(h);S_CUTR(e)::R1(I)
- B(h);N_GUARD::P(D),XP(b)
- S(a);OGATE,XS(F)::QAR1(G),XS(a)
- Tries
- Try
- B(H);
- Threat
- DUALS(2)
- Vars
- Q(f);N_GUARD,P_PINB(E),XB(H)::QAB(G)
- R(c);P_PINB(E),XB(H)::P(C)
- S(a);XP(C)::QAR1(G)
- Q(f);::QAR1(G)
- Q(f);N_GUARD::B(H)
- Q(f);N_GUARD::B(H),XQ(f)
- B(g);::P(C)
- Refutation
- Q(f);
- Try
- B(H);
- Threat
- DUALS(2)
- Vars
- R(c);N_GUARD,XS(B)::QAR1(G)
- R(e);XB(H)::P(D),XP(b)
- B(g);XR(J)::P(D),XP(b)
- B(h);XB(H)::R1(I)
- S(a);XP(C)::R1(I)
- P(b);XP(D)::R1(I)
- Q(f);OGATE::QAR(G),XR(c)
- R(c);N_GUARD::QAR1(G),XR(c)
- R(e);::R1(I)
- B(g);::P(D),XP(b)
- S(a);::R1(I)
- P(b);::R1(I)
- Refutation
- S(a);XS(F)
- Try
- B(H);CHECK
- Vars
- Q(f);OGATE,XB(H)::QAR(G),XR(c)
- Refutation
- K(d);P-FLIGHT
- Try
- R(I);XP(i)
- Threat
- R(I)+B(H),DCHECK
- Vars
- R(c);N_GUARD,XS(B)::QAR1(G)
- S(a);OGATE,XS(F)::QAR1(G),XS(a)
- Q(f);OGATE::QAR(G),XR(c)
- Q(f);::R(I)+B(H),DCHECK,XQ(f)
- Refutation
- B(g);XR(J)
- Try
- Q(G);
- Threat
- B(H)
- Vars
- R(c);N_GUARD,XS(B)::QAR1(G)
- S(a);OGATE,XS(F)::QAR1(G),XS(a)
- R(c);N_GUARD::QAR1(G),XR(c)
- Refutation
- Q(f);P_PINB(E),XQ(G)
- Try
- Q(G);XQ(f)
- Threat
- DUALS(7)
- Vars
- R(c);::QAB1(G)
- Refutation
- R(c);XQ(G)
- Try
- Q(G);CHECK
- Refutation
- Q(f);P_PINB(E),XQ(G)
- Try
- Q(G);CHECK
- Vars
- Q(f);N_GUARD,P_PINB(E),P_SPINQ(f)::QAB(G),XQ(f)
- Refutation
- Q(f);XQ(G)
- Try
- Actual
- S(F);
- Threat
- DUALS(2)
- Vars
- R(c);N_GUARD,XS(B)::QAR1(G)
- R(e);XS(F)::P(D),XP(b)
- B(h);XS(F)::R1(I)
- P(b);XP(D)::R1(I)
- Q(f);OGATE::QAR(G),XR(c)
- Q(f);::R1(I)
- R(e);::R1(I)
- B(g);::P(D),XP(b)
- P(b);::R1(I)
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