MESON Chess Problem Database
Problem Display
PID: 234122 (8/5pK1/6Qp/pbPBp3/3kP3/BprN3r/1P1NPP2/3R4 w - - 0 1)
Doukhan, Gerard
Die Schwalbe, 2020
#2
12 + 9
SOLUTION
- SOUND
- Sets
- 1...Rc1
- 2.Sxb3#
- 1...Rc2
- 2.Sxb3#
- 1...Rcxd3
- 2.Sxb3#
- 1...Rc4
- 2.Sxb3#
- 1...Rxc5
- 2.Sxb3#
- 2.Bxc5#
- 1...Rh1
- 2.Sf3#
- 1...Rh2
- 2.Sf3#
- 1...Rhxd3
- 2.Sf3#
- 1...Rf3
- 2.Sxf3#
- 1...Rh4
- 2.Sf3#
- 1...Rh5
- 2.Sf3#
- 1...Rc1
- Tries
- 1.Sc1?
- threat
- 2.Sdxb3#
- 2.Sf3#
- 1...Rcd3
- 2.Sdxb3#
- 1...Rcf3
- 2.Sdxb3#
- 2.Sxf3#
- 1...Rhd3
- 2.Sf3#
- 1...Rhf3
- 2.Sdxb3#
- 2.Sxf3#
- 1...Bd3!
- threat
- 1.Se1?
- threat
- 2.Sxb3#
- 2.Sdf3#
- 1...Rcd3
- 2.Sxb3#
- 1...Rcf3
- 2.Sxb3#
- 2.Sdxf3#
- 1...Rhd3
- 2.Sdf3#
- 1...Rhf3
- 2.Sxb3#
- 2.Sdxf3#
- 1...Bd3!
- threat
- 1.Sb4?
- threat
- 2.Sxb3#
- 1...Kxc5
- 2.Sc2#
- 1...Bd3
- 2.Sc6#
- 1...Rhd3!
- threat
- 1.Sf4?
- threat
- 2.Sxb3#
- 2.Sf3#
- 1...exf4
- 2.Sf3#
- 2.Qf6#
- 1...Rcd3
- 2.Sxb3#
- 1...Rcf3
- 2.Sxb3#
- 2.Sxf3#
- 1...Rhd3
- 2.Sf3#
- 1...Rhf3
- 2.Sxb3#
- 2.Sxf3#
- 1...Bd3!
- threat
- 1.Sxe5?
- threat
- 2.Sdf3#
- 1...Kxe5
- 2.Qf6#
- 1...Bd3
- 2.Sc6#
- 1...Rcf3
- 2.Sdxf3#
- 1...Rhf3
- 2.Sdxf3#
- 1...Rcd3!
- threat
- 1.Bb4?
- threat
- 2.Bxc3#
- 2.bxc3#
- 1...Rcxd3
- 2.Sxb3#
- 1...Rxc5
- 2.Sxb3#
- 2.Bxc5#
- 1...Rhxd3
- 2.Sf3#
- 1...Bxd3
- 2.bxc3#
- 1...Rc1
- 2.Sxb3#
- 1...Rc2
- 2.Sxb3#
- 1...Rc4
- 2.Sxb3#
- 1...axb4!
- threat
- 1.Qg3?
- threat
- 2.Sf3#
- 2.Qxe5#
- 1...Rxd3
- 2.Sxb3#
- 2.Sf3#
- 1...Bxd3
- 2.Sf3#
- 2.e3#
- 1...Rh5
- 2.Sf3#
- 2.Qe3#
- 1...f6
- 2.Sf3#
- 1...Rxg3+!
- threat
- 1.Qd6?
- threat
- 2.Bxb3#
- 2.Bc4#
- 2.Bc6#
- 2.Be6#
- 2.Bb7#
- 2.Bxf7#
- 2.Ba8#
- 2.Qxe5#
- 1...Rcxd3
- 2.Sxb3#
- 2.Bxb3#
- 2.Bc4#
- 2.Bc6#
- 2.Be6#
- 2.Bb7#
- 2.Bxf7#
- 2.Ba8#
- 1...Rxc5
- 2.Sxb3#
- 2.Bxc5#
- 2.Qxc5#
- 2.Qxe5#
- 1...Rhxd3
- 2.Sf3#
- 2.Bxb3#
- 2.Bc4#
- 2.Bc6#
- 2.Be6#
- 2.Bb7#
- 2.Bxf7#
- 2.Ba8#
- 1...Bxd3
- 2.Bxb3#
- 2.Bc4#
- 2.Bc6#
- 2.Be6#
- 2.Bb7#
- 2.Bxf7#
- 2.Ba8#
- 1...Rc4
- 2.Sxb3#
- 2.Bxc4#
- 2.Bc6#
- 2.Be6#
- 2.Bb7#
- 2.Bxf7#
- 2.Ba8#
- 2.Qxe5#
- 1...Rh5
- 2.Sf3#
- 2.Bxb3#
- 2.Bc4#
- 2.Bc6#
- 2.Be6#
- 2.Bb7#
- 2.Bxf7#
- 2.Ba8#
- 1...Bc4
- 2.Bxc4#
- 2.Qxe5#
- 1...Bc6
- 2.Bxc6#
- 2.Qxe5#
- 1...f5
- 2.Bxb3#
- 2.Bc4#
- 2.Bc6#
- 2.Be6#
- 2.Bb7#
- 2.Bf7#
- 2.Ba8#
- 2.Bg8#
- 2.Qxe5#
- 1...f6
- 2.Bxb3#
- 2.Bc4#
- 2.Bc6#
- 2.Be6#
- 2.Bb7#
- 2.Bf7#
- 2.Ba8#
- 2.Bg8#
- 1...Rg3+!
- threat
- 1.Sc1?
- Keys
- 1.Qg1!
- threat
- 2.f3#
- 1...Rg3+
- 2.fxg3#
- 1...Rcxd3
- 2.Sxb3#
- 1...Rhxd3
- 2.Sf3#
- 1...Rh1
- 2.Sf3#
- 1...Rh2
- 2.Sf3#
- 1...Re3
- 2.fxe3#
- 1...Rf3
- 2.Sxf3#
- threat
- 1.Qg1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 5
- Sets
- R(b);N_GUARD::S(C),XP(a)
- R(b);N_GUARD,XS(G)::S(C),XP(a)
- R(c);N_GUARD::S(C)
- R(c);N_GUARD,XS(G)::S(C)
- R(c);N_GUARD::S(C),XR(c)
- Tries
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- R(b);::S(C),XP(a)
- R(c);::S(C)
- Refutation
- B(f);
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- R(b);::S(C),XP(a)
- R(c);::S(C)
- Refutation
- B(f);
- Try
- S(G);
- Threat
- R(A)+S(C),DCHECK,XP(a)
- Vars
- K(d);S_FLIGHT,XP(I)::B(F)+S(G)
- B(f);N_GUARD::S(G)
- Refutation
- R(c);
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- R(b);::S(C),XP(a)
- R(c);::S(C)
- Refutation
- B(f);
- Try
- S(G);XP(g)
- Threat
- R(A)+S(C),DCHECK
- Vars
- K(d);OGATEB,S_FLIGHT,XS(G)::QAB1(K)
- B(f);N_GUARD::S(G)
- R(b);::R(A)+S(C),DCHECK,XR(b)
- R(c);::R(A)+S(C),DCHECK,XR(c)
- Refutation
- R(b);
- Try
- B(F);
- Threat
- DUALS(2)
- Vars
- R(b);N_GUARD,XS(G)::S(C),XP(a)
- R(c);N_GUARD,XS(G)::S(C)
- B(f);XS(G)::P(B),XR(b)
- R(b);N_GUARD::S(C),XP(a)
- Refutation
- P(e);XB(F)
- Try
- Q(K);
- Threat
- DUALS(2)
- Vars
- P(i);::S(C)
- Refutation
- R(c);CHECK,XQ(K)
- Try
- Q(K);
- Threat
- DUALS(8)
- Refutation
- R(c);CHECK
- Try
- Actual
- Q(K);
- Threat
- QAB(K)+P(E)
- Vars
- R(c);CHECK,OGATE::QAB(K)+P(E),XR(c)
- R(b);N_GUARD,XS(G)::S(C),XP(a)
- R(c);N_GUARD,XS(G)::S(C)
- R(c);N_GUARD::S(C)
- R(c);OGATE::P(E),XR(c)
- R(c);N_GUARD::S(C),XR(c)
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