MESON Chess Problem Database

Problem Display
PID: 67441 (5R2/2BPrbp1/3N4/4r3/R2n1kBP/3P2NK/5P2/b4n2 w - - 0 1)

Bourd, Evgeny

1st Prize, Israel Ring Ty., 2005

5R2/2BPrbp1/3N4/4r3/R2n1kBP/3P2NK/5P2/b4n2

#2

11 + 8

721 Variantim 2005
145 StrateGems 2008
56 The Problemist 2008
15323 FIDE Album (2004-2006) 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Se3
      • 2.Se2#
    • 1...g5
      • 2.Sh5#
  • Tries
    • 1.Sc4?
      • threat
        • 2.Sh5#
      • 1...Sxg3
        • 2.fxg3#
      • 1...Sf5
        • 2.Se2#
      • 1...g6!
    • 1.Sb5?
      • threat
        • 2.Se2#
        • 2.Sh5#
      • 1...g6
        • 2.Se2#
      • 1...Sxg3!
    • 1.Sb7?
      • threat
        • 2.Se2#
        • 2.Sh5#
      • 1...g6
        • 2.Se2#
      • 1...Sxg3!
    • 1.Sxf7?
      • threat
        • 2.Se2#
        • 2.Sh5#
      • 1...g6
        • 2.Se2#
      • 1...Sxg3!
    • 1.Sc8?
      • threat
        • 2.Se2#
        • 2.Sh5#
      • 1...g6
        • 2.Se2#
      • 1...Sxg3!
    • 1.Se8?
      • threat
        • 2.Se2#
        • 2.Sh5#
      • 1...g6
        • 2.Se2#
      • 1...Sxg3!
    • 1.Rxf7+?
      • 1...Rf5
        • 2.Rxf5#
      • 1...Rxf7!
  • Keys
    • 1.Sdf5!
      • threat
        • 2.Se2#
      • 1...Sxg3
        • 2.fxg3#
      • 1...Bc4
        • 2.Sh5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • S(b);S_CUTR(e)::S(C)
    • P(h);S_CUTR(e)::S(C)
  • Tries
    • Try
      • S(H);N_PINS(c),P_PINR(e)
      • Threat
        • S(C)
      • Vars
        • S(b);OGATE,XS(C)::P(A),XS(b)
        • S(c);N_GUARD,N_SPINB(g)::S(C)
      • Refutation
        • P(h);
    • Try
      • S(H);P_PINR(e)
      • Threat
        • DUALS(2)
      • Vars
        • P(h);::S(C)
      • Refutation
        • S(b);XS(C)
    • Try
      • S(H);P_PINR(e)
      • Threat
        • DUALS(2)
      • Vars
        • P(h);::S(C)
      • Refutation
        • S(b);XS(C)
    • Try
      • S(H);P_PINR(e),XB(g)
      • Threat
        • DUALS(2)
      • Vars
        • P(h);::S(C)
      • Refutation
        • S(b);XS(C)
    • Try
      • S(H);P_PINR(e)
      • Threat
        • DUALS(2)
      • Vars
        • P(h);::S(C)
      • Refutation
        • S(b);XS(C)
    • Try
      • S(H);P_PINR(e)
      • Threat
        • DUALS(2)
      • Vars
        • P(h);::S(C)
      • Refutation
        • S(b);XS(C)
    • Try
      • R(K);CHECK,XB(g)
      • Vars
        • R(e);N_GUARD,P_SPINR(e)::R1(K),XR(e)
      • Refutation
        • R(f);XR(K)
  • Actual
    • S(H);N_PINB(g),P_PINR(e)
    • Threat
      • S(C)
    • Vars
      • S(b);OGATE,XS(C)::P(A),XS(b)
      • B(g);N_GUARD,N_SPINS(c)::S(C)
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