MESON Chess Problem Database

Problem Display
PID: 108163 (1Q2R3/2pBBp2/4Np2/R2Pk3/8/3pp1K1/q2N4/8 w - - 0 1)

Goldstein, Alexander

Gazeta Polska, 1934

1Q2R3/2pBBp2/4Np2/R2Pk3/8/3pp1K1/q2N4/8

#2

9 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...f5
      • 2.Qxc7#
  • Tries
    • 1.Sf4?
      • threat
        • 2.Bc5#
      • 1...Kd4
        • 2.Bxf6#
      • 1...Qxd5
        • 2.Rxd5#
        • 2.Qb2#
      • 1...f5!
    • 1.Qb2+?
      • 1...Kf5
        • 2.Qxf6#
      • 1...Qxb2!
  • Keys
    • 1.Sxc7!
      • threat
        • 2.Bc5#
      • 1...Kd4
        • 2.Bxf6#
      • 1...Qxd5
        • 2.Rxd5#
        • 2.Qb2#
      • 1...f5
        • 2.Se6#

This is a version

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(e);SBLOCK::QAB(H),XP(f)
  • Tries
    • Try
      • S(E);
      • Threat
        • R(I)+B(G)
      • Vars
        • K(d);N_SPINP(f),S_FLIGHT::B(G),XP(e)
      • Refutation
        • P(e);
    • Try
      • Q(H);CHECK,N_PINP(f)
      • Vars
        • K(d);OGATE,P-FLIGHT::QAR1(H),XP(e)
      • Refutation
        • Q(a);XQ(H)
  • Actual
    • S(E);XP(f)
    • Threat
      • R(I)+B(G)
    • Vars
      • K(d);S_FLIGHT::B(G),XP(e)
      • P(e);SBLOCK::QAB(H)+S(E)
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