MESON Chess Problem Database

Problem Display
PID: 185254 (2R5/2b2K2/B5NQ/P2p4/3k1p2/1n1P4/1Pnp2PB/8 w - - 0 1)

Stallybrass, Don HR

Chess, 1956

2R5/2b2K2/B5NQ/P2p4/3k1p2/1n1P4/1Pnp2PB/8

#2

10 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Bxa5
      • 2.Qxf4#
    • 1...Bb6
      • 2.Qxf4#
    • 1...Bd8
      • 2.Qxf4#
    • 1...Sca1
      • 2.Bg1#
    • 1...Se1
      • 2.Bg1#
    • 1...Sa3
      • 2.Bg1#
    • 1...Sb4
      • 2.Bg1#
  • Tries
    • 1.Qxf4+?
      • 1...Kc5
        • 2.Rxc7#
      • 1...Bxf4!
  • Keys
    • 1.Sxf4!
      • threat
        • 2.Se6#
      • 1...Ke3
        • 2.Bg1#
      • 1...Kc5
        • 2.Qb6#
      • 1...Ke5
        • 2.Qf6#
      • 1...Bxf4
        • 2.Qxf4#
      • 1...Sc5
        • 2.Se2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 7
  • Sets
    • B(g);N_GUARD,XP(E)::QAR2(H),XP(e)
    • B(g);N_GUARD::QAR2(H),XP(e)
    • S(a);N_GUARD::B(C)
  • Tries
    • Try
      • Q(H);CHECK,XP(e)
      • Vars
        • K(d);P_SPINB(g),S_FLIGHT::R(J),XB(g)
      • Refutation
        • B(g);XQ(H)
  • Actual
    • S(G);XP(e)
    • Threat
      • S(G)
    • Vars
      • K(d);S_FLIGHT::B(C)
      • K(d);P_SPINB(g),S_FLIGHT::QAB1(H)
      • K(d);S_FLIGHT::QAB1(H)
      • B(g);OGATE,XS(G)::QAR2(H),XB(g)
      • S(c);SBLOCK::S(G)
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