MESON Chess Problem Database
Problem Display
PID: 66817 (qB6/1nPPpN2/4kNP1/1p1rnpP1/p2p2P1/1R5K/Q3B3/4R3 w - - 0 1)
Neumann, Itzhak
Skakbladet, 1934
#2
13 + 10
| 5828 | My Selected Chess Problems (Neumann) | 1968 |
SOLUTION
- SOUND
- Sets
- 1...Sc4
- 2.Bxc4#
- 1...Sd6
- 2.Sd8#
- 2.d8S#
- 1...Sd8
- 2.cxd8S#
- 1...fxg4+
- 2.Bxg4#
- 1...Sc4
- Tries
- 1.Sd8+?
- 1...Sxd8
- 2.cxd8S#
- 1...Kd6!
- 1...Sxd8
- 1.Rbb1?
- threat
- 2.Qxd5#
- 1...fxg4+
- 2.Bxg4#
- 1...Sc4
- 2.Bxc4#
- 1...Sa5
- 2.d8S#
- 1...Sc5
- 2.d8S#
- 1...Sd6
- 2.Sd8#
- 2.d8S#
- 1...Sd8
- 2.cxd8S#
- 1...exf6!
- threat
- 1.Rb2?
- threat
- 2.Qxd5#
- 1...fxg4+
- 2.Bxg4#
- 1...Sc4
- 2.Bxc4#
- 1...Sa5
- 2.d8S#
- 1...Sc5
- 2.d8S#
- 1...Sd6
- 2.Sd8#
- 2.d8S#
- 1...Sd8
- 2.cxd8S#
- 1...exf6!
- threat
- 1.Ra3?
- threat
- 2.Qxd5#
- 1...fxg4+
- 2.Bxg4#
- 1...Sc4
- 2.Bxc4#
- 1...Sa5
- 2.d8S#
- 1...Sc5
- 2.d8S#
- 1...Sd6
- 2.Sd8#
- 2.d8S#
- 1...Sd8
- 2.cxd8S#
- 1...exf6!
- threat
- 1.Rc3?
- threat
- 2.Qxd5#
- 1...fxg4+
- 2.Bxg4#
- 1...Sc4
- 2.Bxc4#
- 1...Sa5
- 2.d8S#
- 1...Sc5
- 2.d8S#
- 1...Sd6
- 2.Sd8#
- 2.d8S#
- 1...Sd8
- 2.cxd8S#
- 1...exf6!
- threat
- 1.Re3?
- threat
- 2.Rxe5#
- 2.Qxd5#
- 1...fxg4+
- 2.Bxg4#
- 1...dxe3
- 2.Qxd5#
- 1...Sa5
- 2.Rxe5#
- 2.d8S#
- 1...Sc5
- 2.Rxe5#
- 2.d8S#
- 1...Sd6
- 2.Sd8#
- 2.Rxe5#
- 2.d8S#
- 1...Sd8
- 2.Rxe5#
- 2.cxd8S#
- 1...exf6!
- threat
- 1.Rg3?
- threat
- 2.Qxd5#
- 1...fxg4+
- 2.Bxg4#
- 1...Sc4
- 2.Bxc4#
- 1...Sa5
- 2.d8S#
- 1...Sc5
- 2.d8S#
- 1...Sd6
- 2.Sd8#
- 2.d8S#
- 1...Sd8
- 2.cxd8S#
- 1...exf6!
- threat
- 1.Rb4?
- threat
- 2.Qxd5#
- 1...fxg4+
- 2.Bxg4#
- 1...Sc4
- 2.Bxc4#
- 1...Sa5
- 2.d8S#
- 1...Sc5
- 2.d8S#
- 1...Sd6
- 2.Sd8#
- 2.d8S#
- 1...Sd8
- 2.cxd8S#
- 1...exf6!
- threat
- 1.Rxb5?
- threat
- 2.Qxd5#
- 1...fxg4+
- 2.Bxg4#
- 1...Sc4
- 2.Bxc4#
- 1...Sa5
- 2.d8S#
- 1...Sc5
- 2.d8S#
- 1...Sd6
- 2.Sd8#
- 2.d8S#
- 1...Sd8
- 2.cxd8S#
- 1...exf6!
- threat
- 1.c8B?
- threat
- 2.d8S#
- 1...fxg4+
- 2.Bxg4#
- 1...Rxd7
- 2.Re3#
- 1...Sxd7
- 2.Bc4#
- 1...Sd8
- 2.Sxd8#
- 1...exf6!
- threat
- 1.Sd8+?
- Keys
- 1.c8Q!
- threat
- 2.d8S#
- 1...fxg4+
- 2.Bxg4#
- 1...Rxd7
- 2.Re3#
- 1...Sxd7
- 2.Bc4#
- 1...exf6
- 2.Qe8#
- 1...Sd8
- 2.Sxd8#
- threat
- 1.c8Q!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 1
- Sets
- S(e);OGATEB::R(A)+B(C),XS(e)
- S(h);OGATE::PXS(h)=S
- P(f);CHECK,OGATE,XP(F)::B(C),XP(f)
- Tries
- Try
- S(L);CHECK
- Vars
- S(h);OGATE,XS(L)::PXS(h)=S
- Refutation
- K(g);P-FLIGHT
- Try
- R(D);P_PINR(d)
- Threat
- QAB1(B),XR(d)
- Vars
- P(f);CHECK,OGATE,XP(F)::B(C),XP(f)
- S(e);N_SPINR(d),OGATEB::R(A)+B(C),XS(e)
- S(h);N_GUARD::P=S
- S(h);OGATE::PXS(h)=S
- Refutation
- P(i);XS(H)
- Try
- R(D);P_PINR(d)
- Threat
- QAB1(B),XR(d)
- Vars
- P(f);CHECK,OGATE,XP(F)::B(C),XP(f)
- S(e);N_SPINR(d),OGATEB::R(A)+B(C),XS(e)
- S(h);N_GUARD::P=S
- S(h);OGATE::PXS(h)=S
- Refutation
- P(i);XS(H)
- Try
- R(D);P_PINR(d)
- Threat
- QAB1(B),XR(d)
- Vars
- P(f);CHECK,OGATE,XP(F)::B(C),XP(f)
- S(e);N_SPINR(d),OGATEB::R(A)+B(C),XS(e)
- S(h);N_GUARD::P=S
- S(h);OGATE::PXS(h)=S
- Refutation
- P(i);XS(H)
- Try
- R(D);P_PINR(d)
- Threat
- QAB1(B),XR(d)
- Vars
- P(f);CHECK,OGATE,XP(F)::B(C),XP(f)
- S(e);N_SPINR(d),OGATEB::R(A)+B(C),XS(e)
- S(h);N_GUARD::P=S
- S(h);OGATE::PXS(h)=S
- Refutation
- P(i);XS(H)
- Try
- R(D);P_PINR(d),P_PINS(e)
- Threat
- DUALS(2)
- Vars
- P(f);CHECK,OGATE,XP(F)::B(C),XP(f)
- P(b);N_SPINS(e),XR(D)::QAB1(B),XR(d)
- Refutation
- P(i);XS(H)
- Try
- R(D);P_PINR(d)
- Threat
- QAB1(B),XR(d)
- Vars
- P(f);CHECK,OGATE,XP(F)::B(C),XP(f)
- S(e);N_SPINR(d),OGATEB::R(A)+B(C),XS(e)
- S(h);N_GUARD::P=S
- S(h);OGATE::PXS(h)=S
- Refutation
- P(i);XS(H)
- Try
- R(D);P_PINR(d)
- Threat
- QAB1(B),XR(d)
- Vars
- P(f);CHECK,OGATE,XP(F)::B(C),XP(f)
- S(e);N_SPINR(d),OGATEB::R(A)+B(C),XS(e)
- S(h);N_GUARD::P=S
- S(h);OGATE::PXS(h)=S
- Refutation
- P(i);XS(H)
- Try
- R(D);P_PINR(d),XP(c)
- Threat
- QAB1(B),XR(d)
- Vars
- P(f);CHECK,OGATE,XP(F)::B(C),XP(f)
- S(e);N_SPINR(d),OGATEB::R(A)+B(C),XS(e)
- S(h);N_GUARD::P=S
- S(h);OGATE::PXS(h)=S
- Refutation
- P(i);XS(H)
- Try
- P(J);
- Threat
- P=S
- Vars
- P(f);CHECK,OGATE,XP(F)::B(C),XP(f)
- R(d);OGATEB,P_SPINR(d),XP(K)::QAB(B)+R(D)
- S(e);OGATEB,P_SPINS(e),XP(K)::R(A)+B(C)
- S(h);N_GUARD::S(L),XS(h)
- Refutation
- P(i);XS(H)
- Try
- Actual
- P(J);
- Threat
- P=S
- Vars
- P(f);CHECK,OGATE,XP(F)::B(C),XP(f)
- R(d);OGATEB,P_SPINR(d),XP(K)::QAB(B)+R(D)
- S(e);OGATEB,P_SPINS(e),XP(K)::R(A)+B(C)
- P(i);OGATEB,XS(H)::QAR2(J)
- S(h);N_GUARD::S(L),XS(h)
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