MESON Chess Problem Database

Problem Display
PID: 276582 (7B/3pP1N1/1n1Q1q2/2pPRpr1/2pk2p1/4R3/8/5K1B w - - 0 1)

Bourd, Evgeny

Sp. HM., Pat a Mat 04. TT, 2006

7B/3pP1N1/1n1Q1q2/2pPRpr1/2pk2p1/4R3/8/5K1B

#2

9 + 9

15601 Albrecht-Leiss-Degener Collection 2024

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe5
      • 2.Qxe5#
    • 1...Sxd5
      • 2.Qxd5#
    • 1...f4
      • 2.R5e4#
  • Tries
    • 1.Se6+?
      • 1...Qxe6
        • 2.R5e4#
      • 1...dxe6!
    • 1.Qxf6?
      • threat
        • 2.Re6#
      • 1...Sxd5
        • 2.R5e4#
      • 1...Rg6
        • 2.Sxf5#
      • 1...f4
        • 2.Qxf4#
      • 1...c3!
  • Keys
    • 1.Re6!
      • threat
        • 2.Qf4#
      • 1...Qxe6
        • 2.Sxf5#
      • 1...Sxd5
        • 2.Qxd5#
      • 1...Qe5
        • 2.Qxe5#
      • 1...f4
        • 2.R6e4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • Q(h);OGATE,XR(E)::QAB1(F),XQ(h)
    • S(g);OGATE,P_SPINS(g),XP(D)::QAR1(F),XS(g)
    • P(e);N_GUARD::R1(E)
  • Tries
    • Try
      • S(H);CHECK
      • Vars
        • Q(h);XS(H)::B(I)+R(E),DCHECK
      • Refutation
        • P(i);XS(H)
    • Try
      • Q(F);XQ(h)
      • Threat
        • QAB(F)+R(E)
      • Vars
        • S(g);SBLOCK,XP(D)::QAB(F)+R(E),DCHECK
        • R(f);N_GUARD::S(H),XP(e)
        • P(e);OGATE::QAR2(F),XP(e)
      • Refutation
        • P(a);
  • Actual
    • R(E);
    • Threat
      • QAR2(F)
    • Vars
      • Q(h);XR(E)::B(I)+S(H),DCHECK,XP(e)
      • S(g);OGATE,P_SPINS(g),XP(D)::QAR1(F),XS(g)
      • Q(h);N_GUARD::QAB1(F),XQ(h)
      • P(e);N_GUARD::R1(E)
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Developed and maintained by Brian Stephenson.
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