MESON Chess Problem Database

Problem Display
PID: 135799 (8/1Q1b1N2/1nqB4/R3PPK1/1n2kpN1/4Prp1/4P3/2RB4 w - - 0 1)

Dyachuk, Vasyl Vasilovich

Variantim, 2009

8/1Q1b1N2/1nqB4/R3PPK1/1n2kpN1/4Prp1/4P3/2RB4

#2

12 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Sa2
      • 2.Bc2#
    • 1...Sc2
      • 2.Bxc2#
    • 1...Sd3
      • 2.exf3#
    • 1...Sa6
      • 2.Bc2#
    • 1...Sa4
      • 2.Rc4#
    • 1...Sc4
      • 2.Rxc4#
    • 1...Sa8
      • 2.Rc4#
    • 1...Sc8
      • 2.Rc4#
  • Tries
    • 1.Bc2+?
      • 1...Sd3
        • 2.Bxd3#
        • 2.exd3#
      • 1...Sxc2!
    • 1.Rxc6?
      • threat
        • 2.Rc4#
      • 1...Sxc6
        • 2.Bc2#
      • 1...S4d5
        • 2.Bc2#
      • 1...Sc4
        • 2.Rxc4#
      • 1...Bxc6!
    • 1.Qxc6+?
      • 1...S4d5
        • 2.Bc2#
        • 2.Qc2#
      • 1...Sxc6
        • 2.Bc2#
      • 1...S6d5
        • 2.Rc4#
        • 2.Qc4#
      • 1...Bxc6!
  • Keys
    • 1.Bc5!
      • threat
        • 2.Sf6#
      • 1...Kd5
        • 2.Sf6#
      • 1...S4d5
        • 2.Bc2#
      • 1...S6d5
        • 2.Rc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 8
  • Sets
    • S(c);N_GUARD::B(B)
    • S(c);N_GUARD::B(B),XS(c)
    • S(c);SBLOCK::P(C),XR(a)
    • S(f);N_GUARD::R(A)
    • S(f);N_GUARD::R(A),XS(f)
  • Tries
    • Try
      • B(B);CHECK
      • Refutation
        • S(c);XB(B)
    • Try
      • R(A);XQ(g)
      • Threat
        • QAB(K)+R(A),DCHECK
      • Vars
        • S(c);N_GUARD,P_SPINS(c),XR(A)::B(B)
        • S(c);N_GUARD::B(B)
        • S(f);::QAB(K)+R(A),DCHECK,XS(f)
      • Refutation
        • B(h);P_SPINB(h),XR(A)
    • Try
      • Q(K);CHECK,XQ(g)
      • Vars
        • S(c);XQ(K)::B(B)
      • Refutation
        • B(h);XQ(K)
  • Actual
    • B(J);
    • Threat
      • S(E)
    • Vars
      • K(d);S_FLIGHT::S(E)
      • S(c);N_GUARD,N_SPINQ(g),SBLOCK::B(B)
      • S(f);N_GUARD,N_SPINQ(g),SBLOCK::R(A)
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Developed and maintained by Brian Stephenson.
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