MESON Chess Problem Database

Problem Display
PID: 271886 (1B6/b5pN/2pqr3/2p1kp2/3R1R2/4P2P/3KQ3/7B w - - 0 1)

Fastosky, L

The Problemist, 1956

1B6/b5pN/2pqr3/2p1kp2/3R1R2/4P2P/3KQ3/7B

#2

9 + 8

SOLUTION

  • SOUND
  • Tries
    • 1.Qh5?
      • threat
        • 2.Re4#
        • 2.Rxf5#
        • 2.Qxf5#
      • 1...cxd4
        • 2.Rxf5#
        • 2.Qxf5#
      • 1...Rf6
        • 2.Re4#
      • 1...Rg6
        • 2.Re4#
        • 2.Qxf5#
      • 1...Rh6
        • 2.Re4#
        • 2.Qxf5#
      • 1...Re7
        • 2.Re4#
        • 2.Qxf5#
      • 1...Re8
        • 2.Re4#
        • 2.Qxe8#
        • 2.Qxf5#
      • 1...g6
        • 2.Re4#
      • 1...g5!
  • Keys
    • 1.e4!
      • threat
        • 2.exf5#
      • 1...Kxd4
        • 2.e5#
      • 1...Kxf4
        • 2.Qh2#
      • 1...cxd4
        • 2.Rxf5#
      • 1...fxe4
        • 2.Qxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);P_PINP(c)
      • Threat
        • DUALS(3)
      • Vars
        • R(f);::R1(G)
        • P(h);::R1(G)
      • Refutation
        • P(h);N_SPINP(c)
  • Actual
    • P(D);
    • Threat
      • QAR(C)+P(D),XP(c)
    • Vars
      • K(b);N_SPINQ(e),OGATE,S_FLIGHT,XR(F)::R(G)+P(D)
      • K(b);OGATEB,S_FLIGHT,XR(G)::QAB(C)
      • P(a);SBLOCK,XR(F)::R1(G),XP(c)
      • P(c);OGATE,P_SPINP(c),XP(D)::QAR1(C),XP(c)
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