MESON Chess Problem Database

Problem Display
PID: 39393 (8/1pp1r3/4p2b/1P1kN3/1P3n1R/K2N1P2/1P1RBn1B/6Q1 w - - 0 1)

Feher, Ignaz

4th HM., BCF 022. Ty., 1936-1937

8/1pp1r3/4p2b/1P1kN3/1P3n1R/K2N1P2/1P1RBn1B/6Q1

#2

12 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Sd1
      • 2.Qc5#
    • 1...Sh1
      • 2.Qc5#
    • 1...S2xd3
      • 2.Qc5#
    • 1...S2h3
      • 2.Qc5#
    • 1...Sg4
      • 2.Qc5#
  • Tries
    • 1.Sxf2+?
      • 1...Sd3
        • 2.Rxd3#
      • 1...Kxe5!
    • 1.Sc6?
      • threat
        • 2.Sxf4#
      • 1...Kc4
        • 2.Sxf2#
        • 2.Sde5#
      • 1...Kd6
        • 2.Sxf2#
      • 1...S2xd3
        • 2.Qd4#
        • 2.Qc5#
      • 1...Sxe2
        • 2.Sxe7#
      • 1...S4xd3
        • 2.Sxe7#
        • 2.Rd4#
      • 1...Sg2
        • 2.Sf4#
        • 2.Sxe7#
        • 2.Rd4#
      • 1...S4h3
        • 2.Sf4#
        • 2.Sxe7#
        • 2.Rd4#
      • 1...Sh5
        • 2.Sf4#
        • 2.Sxe7#
        • 2.Rd4#
      • 1...Sg6
        • 2.Sf4#
        • 2.Rd4#
      • 1...bxc6!
    • 1.Qxf2?
      • threat
        • 2.Qc5#
      • 1...Kd6
        • 2.Qc5#
      • 1...c5
        • 2.Qxc5#
      • 1...b6!
  • Keys
    • 1.Sg4!
      • threat
        • 2.Sxf4#
      • 1...Kc4
        • 2.Sde5#
      • 1...Kd4
        • 2.Sxf4#
      • 1...Kd6
        • 2.Sdxf2#
      • 1...S2xd3
        • 2.Qc5#
      • 1...Sxg4
        • 2.Qc5#
      • 1...Sxe2
        • 2.Sf6#
      • 1...S4xd3
        • 2.Sf6#
      • 1...Sg2
        • 2.Sf4#
        • 2.Sf6#
      • 1...S4h3
        • 2.Sf4#
        • 2.Sf6#
      • 1...Sh5
        • 2.Sf4#
      • 1...Sg6
        • 2.Sf4#
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 3
  • Sets
    • S(a);OGATE::QAR1(A)
    • S(a);OGATE,P_SPINS(a),XS(G)::QAR1(A)
  • Tries
    • Try
      • S(G);CHECK,XS(a)
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::R(C),XS(b)
      • Refutation
        • K(c);P-FLIGHT,P_SPINS(b),XS(L)
    • Try
      • S(L);
      • Threat
        • R(C)+S(G),DCHECK,XS(b)
      • Vars
        • K(c);P-FLIGHT,P_SPINS(b)::R(C)+S(G),XS(a)
        • S(b);XB(D)::S(L),XR(h)
      • Refutation
        • P(f);XS(L)
    • Try
      • Q(A);XS(a)
      • Threat
        • QAR1(A)
      • Vars
        • K(c);P-FLIGHT::QAB1(A)
        • P(g);::QAR1(A),XP(g)
      • Refutation
        • P(f);
  • Actual
    • S(L);
    • Threat
      • R(C)+S(G),DCHECK,XS(b)
    • Vars
      • K(c);S_FLIGHT::B(D)+S(G),DCHECK
      • K(c);P-FLIGHT,P_SPINS(a)::R(C)+S(G),XS(b)
      • K(c);P-FLIGHT,P_SPINS(b)::R(C)+S(G),XS(a)
      • S(a);OGATE,P_SPINS(a),XS(G)::QAR1(A)
      • S(a);OGATE,XS(L)::QAR1(A)
      • S(b);XB(D)::S(L)
      • S(b);P_SPINS(b),XS(G)::S(L)
      • S(b);::R(C)+S(G),DCHECK
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