MESON Chess Problem Database

Problem Display
PID: 240148 (2n5/5Q1B/2N3nN/1p2P2b/2p1kppR/2R2pPP/2P2p2/5K2 w - - 0 1)

Zilahi, Zoltan

Magyar Sakkelet, 1965

2n5/5Q1B/2N3nN/1p2P2b/2p1kppR/2R2pPP/2P2p2/5K2

#2

11 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...fxg3
      • 2.Qxf3#
    • 1...gxh3
      • 2.Rxf4#
    • 1...b4
      • 2.Qxc4#
  • Tries
    • 1.Bg8?
      • threat
        • 2.Qd5#
        • 2.Qf5#
      • 1...Sxh4
        • 2.Qd5#
        • 2.Qxf4#
      • 1...fxg3
        • 2.Qxf3#
        • 2.Qf5#
      • 1...Sb6
        • 2.Qf5#
      • 1...Sge7
        • 2.Qxf4#
      • 1...Sd6
        • 2.Qd5#
      • 1...Sce7!
    • 1.Rd3?
      • threat
        • 2.Qd5#
        • 2.Qxf4#
        • 2.Qf5#
      • 1...fxg3
        • 2.Qxf3#
        • 2.Qf5#
      • 1...Sb6
        • 2.Qxf4#
        • 2.Qf5#
      • 1...Sd6
        • 2.Qd5#
        • 2.Qxf4#
      • 1...Se7
        • 2.Qxf4#
      • 1...cxd3!
  • Keys
    • 1.Sf5!
      • 1...Sxh4
        • 2.Sd6#
      • 1...Sxe5
        • 2.Sd6#
      • 1...fxg3
        • 2.Sxg3#
      • 1...gxh3
        • 2.Re3#
      • 1...Sge7
        • 2.Sd6#
      • 1...Sf8
        • 2.Sd6#
      • 1...Sh8
        • 2.Sd6#
      • 1...Sb6
        • 2.Sd6#
      • 1...Sd6
        • 2.Sxd6#
      • 1...Sa7
        • 2.Sd6#
      • 1...Sce7
        • 2.Sd6#
      • 1...b4
        • 2.Rxc4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 3
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • P(e);OGATE,P_SPINP(f),XP(D)::QAB1(J),XP(b)
    • P(f);OGATE,P_SPINP(e),XP(E)::R1(F),XP(e)
    • P(g);N_GUARD::QAR2(J),XP(c)
  • Tries
    • Try
      • B(K);N_PINS(i)
      • Threat
        • DUALS(2)
      • Vars
        • S(j);::QAB1(J)
        • S(i);N_GUARD::QAR1(J),XP(e)
      • Refutation
        • S(j);
    • Try
      • R(C);
      • Threat
        • DUALS(3)
      • Vars
        • S(j);::QAR1(J),XP(e)
      • Refutation
        • P(c);XR(C)
  • Actual
    • S(I);N_PINS(i)
    • Vars
      • S(i);XR(F)::B(K)+S(I),DCHECK
      • S(i);XP(G)::B(K)+S(I),DCHECK
      • P(e);P_SPINP(f),XP(D)::S(I),XP(e)
      • P(f);P_SPINP(e),XP(E)::R1(C)
      • S(i);::B(K)+S(I),DCHECK
      • S(j);N_GUARD::S(I)
      • S(j);N_GUARD::S(I),XS(j)
      • P(g);N_GUARD::R(C),XP(c)
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