MESON Chess Problem Database
Problem Display
PID: 222772 (8/2p1p3/1P2R3/2pknKp1/1PNBpPP1/1B1NP3/1n1R4/8 w - - 0 1)
Lipton, Michael
3rd HM., US Problem Bulletin, 1964
#2
12 + 8
SOLUTION
- SOUND
- Sets
- 1...cxb4
- 2.Sxb4#
- 1...gxf4
- 2.Sxf4#
- 1...cxb6
- 2.Sxb6#
- 1...c6
- 2.Rxe5#
- 1...cxb4
- Tries
- 1.Sxc5?
- 1...Sbxc4
- 2.Bxe5#
- 1...Sexc4
- 2.Bxb2#
- 1...Sxg4
- 2.Sxb2#
- 2.Bxb2#
- 1...cxb6
- 2.Sxb6#
- 1...Sd1
- 2.Sxe5#
- 2.Bxe5#
- 1...Sbd3
- 2.Sxe5#
- 1...Sa4
- 2.Sxe5#
- 2.Bxe5#
- 1...Sed3
- 2.Sxb2#
- 1...Sf3
- 2.Sxb2#
- 1...Sc6
- 2.Sxb2#
- 1...Sg6
- 2.Sxb2#
- 2.Bxb2#
- 1...Sd7
- 2.Sxb2#
- 2.Bxb2#
- 1...Sf7
- 2.Sxb2#
- 2.Bxb2#
- 1...c6
- 2.Rxe5#
- 1...gxf4!
- 1...Sbxc4
- 1.Sdxe5?
- threat
- 2.Bxb2#
- 1...Sxc4
- 2.Bxc4#
- 2.Ba1#
- 2.Bb2#
- 2.Bc3#
- 2.Bxc5#
- 1...cxb4
- 2.Sxb2#
- 1...cxd4
- 2.Sxb2#
- 2.Rxd4#
- 1...Sd1
- 2.Ba1#
- 2.Bb2#
- 2.Bc3#
- 2.Bxc5#
- 1...Sa4
- 2.Ba1#
- 2.Bb2#
- 2.Bc3#
- 2.Bxc5#
- 1...Sd3!
- threat
- 1.Scxb2+?
- 1...Sc4
- 2.Bxc4#
- 1...c4!
- 1...Sc4
- 1.Scxe5+?
- 1...Sc4
- 2.Bxc4#
- 1...c4!
- 1...Sc4
- 1.Bxe5?
- threat
- 2.Sdxb2#
- 1...Sxc4
- 2.Sc1#
- 2.Se1#
- 2.Sb2#
- 2.Sf2#
- 2.Sxc5#
- 1...exd3
- 2.e4#
- 1...cxb4
- 2.Scxb2#
- 1...Sd1
- 2.Sc1#
- 2.Se1#
- 2.Sdb2#
- 2.Sf2#
- 2.Sxc5#
- 1...Sa4
- 2.Sc1#
- 2.Se1#
- 2.Sdb2#
- 2.Sf2#
- 2.Sxc5#
- 1...Sxd3!
- threat
- 1.bxc5?
- threat
- 2.Sb4#
- 1...Sbxd3
- 2.Sxe5#
- 1...Sexd3
- 2.Sxb2#
- 1...Sc6
- 2.Scxb2#
- 1...exd3!
- threat
- 1.Sxc5?
- Keys
- 1.Bxc5!
- 1...Sbxd3
- 2.Sxe5#
- 1...Sbxc4
- 2.Sxe5#
- 1...Sexd3
- 2.Sxb2#
- 1...Sexc4
- 2.Sxb2#
- 1...Sxg4
- 2.Sdxb2#
- 2.Scxb2#
- 1...exd3
- 2.e4#
- 1...gxf4
- 2.Sxf4#
- 1...cxb6
- 2.Sxb6#
- 1...Sd1
- 2.Sdxe5#
- 2.Scxe5#
- 1...Sa4
- 2.Sdxe5#
- 2.Scxe5#
- 1...Sf3
- 2.Scxb2#
- 1...Sc6
- 2.Scxb2#
- 1...Sg6
- 2.Sdxb2#
- 2.Scxb2#
- 1...Sd7
- 2.Sdxb2#
- 2.Scxb2#
- 1...Sf7
- 2.Sdxb2#
- 2.Scxb2#
- 1...c6
- 2.Rxe5#
- 1...Sbxd3
- 1.Bxc5!
This is a version
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 1
- Sets
- P(c);XP(E)::S(C),XP(c)
- P(f);XP(H)::S(C),XP(f)
- P(g);XP(K)::B(B)+S(F),DCHECK,XP(g)
- P(g);SBLOCK::R1(L),XS(e)
- Tries
- Try
- S(C);XP(c)
- Vars
- S(a);N_GUARD,P_SPINS(a),XS(F)::R(A)+B(G),XS(e)
- S(e);N_GUARD,P_SPINS(e),XS(F)::R(A)+B(G),XS(a)
- P(g);XP(K)::B(B)+S(F),DCHECK,XP(g)
- S(a);N_GUARD::B(B)+S(F),XS(e)
- S(e);N_GUARD::B(B)+S(F),XS(a)
- P(g);SBLOCK::R1(L),XS(e)
- Refutation
- P(f);XP(H)
- Try
- S(C);XS(e)
- Threat
- R(A)+B(G),XS(a)
- Vars
- P(c);N_GUARD,XP(E)::B(B)+S(F),XS(a)
- Refutation
- S(a);
- Try
- S(F);CHECK,XS(a)
- Vars
- S(e);N_GUARD,P_SPINS(e)::B(B),XS(e)
- Refutation
- P(c);P_SPINP(c)
- Try
- S(F);CHECK,XS(e)
- Vars
- S(a);N_GUARD,P_SPINS(a)::B(B),XS(a)
- Refutation
- P(c);P_SPINP(c)
- Try
- B(G);XS(e)
- Threat
- R(A)+S(C),XS(a)
- Vars
- P(b);OGATE,P_SPINP(b),XS(C)::P(D)
- P(c);N_GUARD,XP(E)::B(B)+S(F),XS(a)
- Refutation
- S(a);P_SPINS(a),XS(C)
- Try
- P(E);XP(c)
- Threat
- S(C)
- Vars
- S(a);N_GUARD,XS(C)::B(B)+S(F),XS(e)
- S(e);N_GUARD,XS(C)::B(B)+S(F),XS(a)
- S(e);N_GUARD::B(B)+S(F),XS(a)
- Refutation
- P(b);XS(C)
- Try
- Actual
- B(G);XP(c)
- Vars
- S(a);N_GUARD,P_SPINS(a),XS(C)::B(B)+S(F),XS(e)
- S(a);N_GUARD,P_SPINS(a),XS(F)::R(A)+S(C),XS(e)
- S(e);N_GUARD,P_SPINS(e),XS(C)::B(B)+S(F),XS(a)
- S(e);N_GUARD,P_SPINS(e),XS(F)::R(A)+S(C),XS(a)
- P(b);OGATE,P_SPINP(b),XS(C)::P(D)
- P(f);XP(H)::R(A)+S(C),DCHECK,XP(f)
- P(g);XP(K)::B(B)+S(F),DCHECK,XP(g)
- S(e);N_GUARD::B(B)+S(F),XS(a)
- P(g);SBLOCK::R1(L),XS(e)
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