MESON Chess Problem Database

Problem Display
PID: 66793 (4R3/1B3p2/1p1p3n/1N2N2Q/K2B1pb1/2p2q2/2PpkrP1/1n1rb1R1 w - - 0 1)

Neumann, Itzhak

2nd HM., British Chess Magazine, 1935

4R3/1B3p2/1p1p3n/1N2N2Q/K2B1pb1/2p2q2/2PpkrP1/1n1rb1R1

#2

10 + 14

5828 My Selected Chess Problems (Neumann) 1968

SOLUTION

  • SOUND
  • Sets
    • 1...Qc6
      • 2.Sxc6#
    • 1...Qd3
      • 2.Sxd3#
    • 1...Bxh5
      • 2.Sxf3#
    • 1...Bd7
      • 2.Sxd7#
    • 1...Bc8
      • 2.Sd7#
    • 1...f5
      • 2.Sxf3#
  • Tries
    • 1.Sxc3+?
      • 1...Qxc3
        • 2.Sd3#
      • 1...Sxc3+!
    • 1.Sd3+?
      • 1...Qe4
        • 2.Rxe4#
      • 1...Be6
        • 2.Sxf4#
      • 1...Qe3!
    • 1.Sxg4+?
      • 1...Qe4
        • 2.Rxe4#
      • 1...Qe3!
    • 1.Sg6+?
      • 1...Qe4
        • 2.Rxe4#
      • 1...Be6
        • 2.Sxf4#
      • 1...Qe3!
    • 1.Sxf7+?
      • 1...Qe4
        • 2.Rxe4#
      • 1...Be6
        • 2.Rxe6#
      • 1...Qe3!
    • 1.Bxf3+?
      • 1...Bxf3
        • 2.Sd3#
        • 2.Sxf3#
        • 2.Sc4#
        • 2.Sc6#
        • 2.Sg6#
        • 2.Sd7#
        • 2.Sxf7#
      • 1...Rxf3!
  • Keys
    • 1.Ba6!
      • threat
        • 2.Sxc3#
      • 1...Qc6
        • 2.Sxc6#
      • 1...Qd3
        • 2.Sxd3#
      • 1...Bd7
        • 2.Sxd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 3
  • Sets
    • Q(h);N_GUARD,P_PINS(F),P_SPINB(j)::R(J)+S(G),XQ(h)
    • Q(h);N_GUARD,P_SPINB(j)::R(J)+S(G),XQ(h)
    • B(j);N_GUARD,XQ(H)::R(J)+S(G),XQ(h)
    • B(j);N_GUARD,P_PINS(F),P_SPINQ(h)::R(J)+S(G),XB(j)
    • B(j);N_GUARD,P_SPINQ(h)::R(J)+S(G)
    • P(n);S_CUTB(j)::R(J)+S(G),XQ(h)
  • Tries
    • Try
      • S(F);CHECK,XP(g)
      • Vars
        • Q(h);P_SPINB(j),XS(F)::R(J)+S(G)
      • Refutation
        • S(a);CHECK,XS(F)
    • Try
      • S(G);CHECK
      • Vars
        • Q(h);N_GUARD,P_PINB(E),P_SPINB(j),P_SPINQ(h)::R(J),XQ(h)
        • B(j);P_SPINB(j),P_SPINQ(h)::S(G),XP(i)
      • Refutation
        • Q(h);P_SPINB(j),P_SPINQ(h)
    • Try
      • S(G);CHECK,XB(j)
      • Vars
        • Q(h);N_GUARD,P_PINB(E),P_SPINQ(h)::R(J),XQ(h)
      • Refutation
        • Q(h);P_SPINQ(h)
    • Try
      • S(G);CHECK
      • Vars
        • Q(h);N_GUARD,P_PINB(E),P_SPINB(j),P_SPINQ(h)::R(J),XQ(h)
        • B(j);P_SPINB(j),P_SPINQ(h)::S(G),XP(i)
      • Refutation
        • Q(h);P_SPINB(j),P_SPINQ(h)
    • Try
      • S(G);CHECK,XP(n)
      • Vars
        • Q(h);N_GUARD,P_PINB(E),P_SPINB(j),P_SPINQ(h)::R(J),XQ(h)
        • B(j);N_GUARD,P_SPINB(j),P_SPINQ(h)::R(J),XB(j)
      • Refutation
        • Q(h);P_SPINB(j),P_SPINQ(h)
    • Try
      • B(I);CHECK,XQ(h)
      • Refutation
        • R(f);XB(I)
  • Actual
    • B(I);
    • Threat
      • B(I)+S(F),DCHECK,XP(g)
    • Vars
      • Q(h);N_GUARD,P_PINS(F),P_SPINB(j)::R(J)+S(G),XQ(h)
      • Q(h);N_GUARD,P_SPINB(j)::R(J)+S(G),XQ(h)
      • B(j);N_GUARD,P_PINS(F),P_SPINQ(h)::R(J)+S(G),XB(j)
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