MESON Chess Problem Database
Problem Display
PID: 22718 (3NK3/n1PQ1p1B/b2Np3/R1p1b3/1PPk1PR1/3p4/nP1P4/8 w - - 0 1)
Knuppert, Hugo
4/5 HM., The Problemist, 1995/II
#2
13 + 9
| 56 | The Problemist | 2008 |
SOLUTION
- SOUND
- Sets
- 1...Bxc4
- 2.Sb5#
- 1...Sc3
- 2.bxc3#
- 1...Sb5
- 2.Sc6#
- 1...Sc6
- 2.Sxc6#
- 1...Sc8
- 2.Sc6#
- 1...cxb4
- 2.fxe5#
- 1...f5
- 2.Sxe6#
- 1...f6
- 2.Sxe6#
- 1...Bxc4
- Tries
- 1.S6xf7+?
- 1...Bd6
- 2.f5#
- 1...Kxc4!
- 1...Bd6
- 1.S8xf7?
- threat
- 2.fxe5#
- 1...Bxf4
- 2.Rxf4#
- 1...Bxd6
- 2.f5#
- 1...Bxc4
- 2.Sb5#
- 1...Bf6
- 2.f5#
- 1...Bg7
- 2.f5#
- 1...Bh8
- 2.f5#
- 1...Sc3
- 2.bxc3#
- 1...Bb7!
- threat
- 1.Bxd3?
- threat
- 2.Sb5#
- 2.Sf5#
- 1...Bxf4
- 2.S6xf7#
- 1...Bxd6
- 2.Qxd6#
- 1...cxb4
- 2.Sf5#
- 1...Bb5
- 2.Sxb5#
- 2.Sf5#
- 1...Sb5
- 2.Sxb5#
- 2.Sf5#
- 1...f5
- 2.Sb5#
- 2.Sxf5#
- 1...Kxd3!
- threat
- 1.Rxc5?
- threat
- 2.Sb5#
- 2.fxe5#
- 1...Bxf4
- 2.Sb5#
- 2.S6b7#
- 2.S6xf7#
- 2.Sc8#
- 2.Rxf4#
- 1...Bxd6
- 2.Qxd6#
- 2.f5#
- 1...Bf6
- 2.Se4#
- 2.Sb5#
- 2.S6b7#
- 2.S6xf7#
- 2.Sc8#
- 2.f5#
- 1...Bg7
- 2.Se4#
- 2.Sb5#
- 2.S6b7#
- 2.S6xf7#
- 2.Sc8#
- 2.f5#
- 1...Bh8
- 2.Se4#
- 2.Sb5#
- 2.S6b7#
- 2.S6xf7#
- 2.Sc8#
- 2.f5#
- 1...Bb5
- 2.Sxb5#
- 2.fxe5#
- 1...Bb7
- 2.Sb5#
- 1...Sc3
- 2.Sb5#
- 2.bxc3#
- 1...Sb5
- 2.Sxb5#
- 2.Sc6#
- 2.fxe5#
- 1...f5
- 2.Sxe6#
- 1...Sxb4!
- threat
- 1.Qc6?
- threat
- 2.Qe4#
- 2.Qxc5#
- 1...Bxd6
- 2.Qe4#
- 1...Sxc6
- 2.Sxc6#
- 1...cxb4
- 2.Qe4#
- 2.Qc5#
- 2.Qb6#
- 2.fxe5#
- 1...Bb7
- 2.Qxc5#
- 1...Sc3
- 2.Qxc5#
- 2.bxc3#
- 1...f5
- 2.Sxe6#
- 2.Qxc5#
- 1...Bb5!
- threat
- 1.Qxe6?
- threat
- 2.Qd5#
- 2.Qxe5#
- 2.fxe5#
- 1...Bxf4
- 2.Sf5#
- 2.Rxf4#
- 2.Qd5#
- 2.Qe3#
- 2.Qe4#
- 2.Qf6#
- 1...Bxd6
- 2.Qd5#
- 2.Qe4#
- 1...Bxc4
- 2.Qxc4#
- 2.Qxe5#
- 2.fxe5#
- 1...Sxb4
- 2.Qxe5#
- 2.fxe5#
- 1...fxe6
- 2.Sxe6#
- 1...Bf6
- 2.Sf5#
- 2.Qd5#
- 2.Qe3#
- 2.Qe4#
- 2.Qxf6#
- 2.f5#
- 1...Bg7
- 2.Sf5#
- 2.Qd5#
- 2.Qe3#
- 2.Qe4#
- 2.f5#
- 1...Bh8
- 2.Sf5#
- 2.Qd5#
- 2.Qe3#
- 2.Qe4#
- 2.f5#
- 1...Bb7
- 2.Qxe5#
- 1...Sc3
- 2.Qxe5#
- 2.bxc3#
- 1...Sc6
- 2.Sxc6#
- 2.Qd5#
- 2.fxe5#
- 1...f5
- 2.Qd5#
- 2.Qxe5#
- 1...f6
- 2.Qd5#
- 2.fxe5#
- 1...Bb5+!
- threat
- 1.c8Q?
- threat
- 2.Qxc5#
- 1...Sxc8
- 2.Sc6#
- 1...cxb4
- 2.Sb5#
- 2.Qxa7#
- 2.Qc5#
- 2.fxe5#
- 1...Sc6
- 2.Sxc6#
- 1...Bxc8!
- threat
- 1.S6xf7+?
- Keys
- 1.b3!
- threat
- 2.Sb5#
- 1...Bxf4
- 2.S6xf7#
- 1...Bxd6
- 2.Qxd6#
- 1...cxb4
- 2.fxe5#
- 1...Bb5
- 2.Sxb5#
- 1...Sb5
- 2.Sxb5#
- 2.Sc6#
- 1...f5
- 2.Sxe6#
- threat
- 1.b3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 6
- Sets
- B(f);SBLOCK,XP(D)::QAR(J)+S(H),DCHECK
- S(a);OGATE::P(A),XS(a)
- S(h);N_GUARD::S(L)
- S(h);N_GUARD::S(L),XS(h)
- P(d);XP(C)::R(F)+P(E),XB(e)
- P(i);N_GUARD::S(L),XP(g)
- Tries
- Try
- S(H);CHECK,XP(i)
- Vars
- B(e);P_SPINB(e)::R(F)+P(E)
- Refutation
- K(c);P-FLIGHT,XP(D)
- Try
- S(L);XP(i)
- Threat
- R(F)+P(E),XB(e)
- Vars
- B(e);OGATE,P_SPINB(e),XP(E)::R(F),XB(e)
- B(e);N_GUARD,P_SPINB(e),XS(H)::R(F)+P(E)
- B(f);SBLOCK,XP(D)::QAR(J)+S(H),DCHECK
- B(e);N_GUARD::R(F)+P(E)
- S(a);OGATE::P(A),XS(a)
- Refutation
- B(f);
- Try
- B(K);XP(b)
- Threat
- DUALS(2)
- Vars
- B(e);N_GUARD,P_SPINB(e),XP(E)::QAR(J)+S(H),XP(i)
- B(e);OGATE,P_SPINB(e),XS(H)::QAR2(J),XB(e)
- P(d);XP(C)::QAR(J)+S(H),DCHECK
- Refutation
- K(c);P-FLIGHT,XB(K)
- Try
- R(G);XP(d)
- Threat
- DUALS(2)
- Vars
- B(f);::QAR(J)+S(H),DCHECK
- P(i);N_GUARD::S(L),XP(g)
- Refutation
- S(a);XP(C)
- Try
- Q(J);
- Threat
- DUALS(2)
- Vars
- B(e);XS(H)::QAR1(J)
- S(h);XQ(J)::S(L),XS(h)
- B(f);::QAB1(J),XP(d)
- Refutation
- B(f);P_PINQ(J)
- Try
- Q(J);XP(g)
- Threat
- DUALS(3)
- Vars
- P(i);XQ(J)::S(L),XP(i)
- B(f);::QAB1(J),XB(e)
- Refutation
- B(f);CHECK
- Try
- P(I);
- Threat
- QAB1(I),XP(d)
- Vars
- S(h);N_GUARD,XQ(I)::S(L)
- S(h);N_GUARD::S(L),XS(h)
- Refutation
- B(f);XQ(I)
- Try
- Actual
- P(A);
- Threat
- QAR(J)+S(H),DCHECK
- Vars
- B(e);N_GUARD,P_SPINB(e),XP(E)::QAR(J)+S(H),XP(i)
- B(e);OGATE,P_SPINB(e),XS(H)::QAR2(J),XB(e)
- P(d);XP(C)::R(F)+P(E),XB(e)
- B(f);P_PINQ(J)::QAR(J)+S(H),DCHECK,XB(f)
- P(i);N_GUARD::S(L),XP(g)
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