MESON Chess Problem Database
Problem Display
PID: 45411 (8/2p3p1/p1B3Qp/B1p1p2K/1pP1N2P/3PrPp1/4k1N1/3R1R1n w - - 0 1)
Neumann, Itzhak
Al Hamishmar, 1967
#2
12 + 11
| 5828 | My Selected Chess Problems (Neumann) | 1968 |
| 3841 | The Art of Israeli Chess Composition | 1983 |
SOLUTION
- SOUND
- Sets
- 1...Rxd3
- 2.Rde1#
- 1...Rxf3
- 2.Rfe1#
- 1...Rxe4
- 2.Qxe4#
- 1...Sf2
- 2.Sxg3#
- 1...b3
- 2.Sc3#
- 1...Rxd3
- Tries
- 1.Sd2?
- 1...Rxf3
- 2.Bxf3#
- 1...Re4
- 2.Qxe4#
- 1...e4
- 2.Sf4#
- 1...Sf2
- 2.Rfe1#
- 1...b3
- 2.Rde1#
- 1...Rxd3!
- 1...Rxf3
- 1.Sg5?
- 1...Rxd3
- 2.Qxd3#
- 1...Rxf3
- 2.Bxf3#
- 1...Re4
- 2.Qxe4#
- 1...Sf2
- 2.Rfe1#
- 1...b3
- 2.Rde1#
- 1...e4
- 2.Sf4#
- 1...hxg5!
- 1...Rxd3
- 1.Sd6?
- 1...Rxd3
- 2.Qxd3#
- 1...Rxf3
- 2.Bxf3#
- 1...Re4
- 2.Qxe4#
- 1...Sf2
- 2.Rfe1#
- 1...b3
- 2.Rde1#
- 1...e4
- 2.Sf4#
- 1...cxd6!
- 1...Rxd3
- 1.Sf6?
- 1...Rxd3
- 2.Qxd3#
- 1...Rxf3
- 2.Bxf3#
- 1...Re4
- 2.Qxe4#
- 1...Sf2
- 2.Rfe1#
- 1...b3
- 2.Rde1#
- 1...e4
- 2.Sf4#
- 1...gxf6!
- 1...Rxd3
- 1.Bxb4?
- threat
- 2.Sc3#
- 1...Rxd3
- 2.Rde1#
- 1...Rxe4
- 2.Qxe4#
- 1...cxb4!
- threat
- 1.Bxc7?
- 1...Rxd3
- 2.Rde1#
- 1...Rxf3
- 2.Rfe1#
- 1...Rxe4
- 2.Qxe4#
- 1...Sf2
- 2.Sxg3#
- 1...b3
- 2.Sc3#
- 1...a5!
- 1...Rxd3
- 1.Bd5?
- 1...Rxd3
- 2.Rde1#
- 1...Rxf3
- 2.Rfe1#
- 1...Rxe4
- 2.Qxe4#
- 1...Sf2
- 2.Sxg3#
- 1...b3
- 2.Sc3#
- 1...c6!
- 1...Rxd3
- 1.Bb7?
- 1...Rxd3
- 2.Rde1#
- 1...Rxf3
- 2.Rfe1#
- 1...Rxe4
- 2.Qxe4#
- 1...Sf2
- 2.Sxg3#
- 1...b3
- 2.Sc3#
- 1...c6!
- 1...Rxd3
- 1.Ba8?
- 1...Rxd3
- 2.Rde1#
- 1...Rxf3
- 2.Rfe1#
- 1...Rxe4
- 2.Qxe4#
- 1...Sf2
- 2.Sxg3#
- 1...b3
- 2.Sc3#
- 1...c6!
- 1...Rxd3
- 1.Qf5?
- threat
- 2.Rfe1#
- 1...Rxe4
- 2.Qxe4#
- 1...g6+!
- threat
- 1.Qxg3?
- threat
- 2.Rfe1#
- 2.Qe1#
- 1...Sxg3+
- 2.Sxg3#
- 1...Sf2
- 2.Rfe1#
- 2.Qxf2#
- 1...g6+!
- threat
- 1.Qg4?
- threat
- 2.Rfe1#
- 1...Rxe4
- 2.Qxe4#
- 2.fxe4#
- 2.f4#
- 1...g6+!
- threat
- 1.Qxg7?
- 1...Rxd3
- 2.Rde1#
- 1...Rxf3
- 2.Rfe1#
- 1...Sf2
- 2.Sxg3#
- 1...b3
- 2.Sc3#
- 1...Rxe4!
- 1...Rxd3
- 1.f4?
- 1...Rxd3
- 2.Rde1#
- 1...Rxe4
- 2.Qxe4#
- 2.Qg4#
- 1...exf4
- 2.Sxf4#
- 1...Rf3
- 2.Rfe1#
- 1...b3
- 2.Sc3#
- 1...Sf2!
- 1...Rxd3
- 1.Sd2?
- Keys
- 1.Sxc5!
- 1...Rxd3
- 2.Qxd3#
- 1...Rxf3
- 2.Bxf3#
- 1...Re4
- 2.Qxe4#
- 1...Sf2
- 2.Rfe1#
- 1...b3
- 2.Rde1#
- 1...e4
- 2.Sf4#
- 1...Rxd3
- 1.Sxc5!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 4
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(c);SBLOCK,XP(D)::R1(A)
- R(c);SBLOCK,XP(E)::R1(B)
- R(c);OGATE,XS(G)::QAR2(L),XR(c)
- S(a);N_GUARD::S(G),XP(d)
- P(e);N_GUARD::S(G)
- Tries
- Try
- S(G);
- Vars
- R(c);OGATE,XP(E)::B(K),XR(c)
- R(c);OGATEB::QAR2(L),XR(c)
- P(g);N_GUARD::S(C)
- S(a);SBLOCK::R1(B)
- P(e);::R1(A)
- Refutation
- R(c);XP(D)
- Try
- S(G);
- Vars
- R(c);OGATE,XP(D)::QAB1(L),XR(c)
- R(c);OGATE,XP(E)::B(K),XR(c)
- R(c);OGATEB::QAR2(L),XR(c)
- S(a);SBLOCK::R1(B)
- P(e);::R1(A)
- P(g);N_GUARD::S(C)
- Refutation
- P(i);XS(G)
- Try
- S(G);
- Vars
- R(c);OGATE,XP(D)::QAB1(L),XR(c)
- R(c);OGATE,XP(E)::B(K),XR(c)
- R(c);OGATEB::QAR2(L),XR(c)
- S(a);SBLOCK::R1(B)
- P(e);::R1(A)
- P(g);N_GUARD::S(C)
- Refutation
- P(j);XS(G)
- Try
- S(G);
- Vars
- R(c);OGATE,XP(D)::QAB1(L),XR(c)
- R(c);OGATE,XP(E)::B(K),XR(c)
- R(c);OGATEB::QAR2(L),XR(c)
- S(a);SBLOCK::R1(B)
- P(e);::R1(A)
- P(g);N_GUARD::S(C)
- Refutation
- P(k);XS(G)
- Try
- B(I);XP(e)
- Threat
- S(G)
- Vars
- R(c);SBLOCK,XP(D)::R1(A)
- R(c);OGATE,XS(G)::QAR2(L),XR(c)
- Refutation
- P(f);XB(I)
- Try
- B(I);XP(j)
- Vars
- R(c);SBLOCK,XP(D)::R1(A)
- R(c);SBLOCK,XP(E)::R1(B)
- R(c);OGATE,XS(G)::QAR2(L),XR(c)
- S(a);N_GUARD::S(G),XP(d)
- P(e);N_GUARD::S(G)
- Refutation
- P(h);
- Try
- B(K);
- Vars
- R(c);SBLOCK,XP(D)::R1(A)
- R(c);SBLOCK,XP(E)::R1(B)
- R(c);OGATE,XS(G)::QAR2(L),XR(c)
- S(a);N_GUARD::S(G),XP(d)
- P(e);N_GUARD::S(G)
- Refutation
- P(j);
- Try
- B(K);
- Vars
- R(c);SBLOCK,XP(D)::R1(A)
- R(c);SBLOCK,XP(E)::R1(B)
- R(c);OGATE,XS(G)::QAR2(L),XR(c)
- S(a);N_GUARD::S(G),XP(d)
- P(e);N_GUARD::S(G)
- Refutation
- P(j);
- Try
- B(K);
- Vars
- R(c);SBLOCK,XP(D)::R1(A)
- R(c);SBLOCK,XP(E)::R1(B)
- R(c);OGATE,XS(G)::QAR2(L),XR(c)
- S(a);N_GUARD::S(G),XP(d)
- P(e);N_GUARD::S(G)
- Refutation
- P(j);
- Try
- Q(L);
- Threat
- R1(B)
- Vars
- R(c);OGATE,XS(G)::QAR2(L),XR(c)
- Refutation
- P(k);CHECK
- Try
- Q(L);XP(d)
- Threat
- DUALS(2)
- Vars
- S(a);CHECK,XQ(L)::S(G),XS(a)
- Refutation
- P(k);CHECK
- Try
- Q(L);
- Threat
- R1(B)
- Refutation
- P(k);CHECK
- Try
- Q(L);XP(k)
- Vars
- R(c);SBLOCK,XP(D)::R1(A)
- R(c);SBLOCK,XP(E)::R1(B)
- S(a);N_GUARD::S(G),XP(d)
- P(e);N_GUARD::S(G)
- Refutation
- R(c);XS(G)
- Try
- P(E);
- Vars
- R(c);SBLOCK,XP(D)::R1(A)
- P(g);XP(E)::S(C),XP(g)
- R(c);SBLOCK::R1(B)
- P(e);N_GUARD::S(G)
- Refutation
- S(a);
- Try
- Actual
- S(G);XP(f)
- Vars
- R(c);OGATE,XP(D)::QAB1(L),XR(c)
- R(c);OGATE,XP(E)::B(K),XR(c)
- R(c);OGATEB::QAR2(L),XR(c)
- S(a);SBLOCK::R1(B)
- P(e);::R1(A)
- P(g);N_GUARD::S(C)
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