MESON Chess Problem Database

Problem Display
PID: 60219 (2QK2b1/1p6/1p6/3k4/1PNp4/3pbP2/q2n1NR1/7B w - - 0 1)

Dyachuk, Vasyl Vasilovich

Shakhmatna misl, 2000

2QK2b1/1p6/1p6/3k4/1PNp4/3pbP2/q2n1NR1/7B

#2

8 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Bxf2
      • 2.Rg5#
    • 1...Bg5+
      • 2.Rxg5#
    • 1...Se4
      • 2.fxe4#
  • Tries
    • 1.Rg6?
      • threat
        • 2.Rd6#
      • 1...Bg5+
        • 2.Rxg5#
      • 1...Qxc4
        • 2.Qf5#
      • 1...Sxc4
        • 2.f4#
      • 1...Be6
        • 2.Qxe6#
      • 1...Se4
        • 2.fxe4#
      • 1...Bf4!
    • 1.Qf5+?
      • 1...Kc6
        • 2.Qd7#
        • 2.b5#
      • 1...Kxc4!
  • Keys
    • 1.f4!
      • threat
        • 2.Rg5#
      • 1...Qxc4
        • 2.Qd7#
      • 1...Sxc4
        • 2.Rg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • B(d);N_GUARD,XS(B)::R(C)
    • B(d);CHECK,N_GUARD::R(C),XB(d)
    • S(b);OGATE::P(D),XS(b)
  • Tries
    • Try
      • R(C);
      • Threat
        • R1(C)
      • Vars
        • B(d);CHECK,N_GUARD::R(C),XB(d)
        • Q(a);SBLOCK,XS(F)::QAR2(G)
        • S(b);N_GUARD,XS(F)::B(A)+P(D)
        • B(i);N_GUARD::QAB1(G),XB(i)
        • S(b);OGATE::P(D),XS(b)
      • Refutation
        • B(d);
    • Try
      • Q(G);CHECK
      • Refutation
        • K(f);S_FLIGHT,XS(F)
  • Actual
    • P(D);
    • Threat
      • B(A)+R(C),DCHECK
    • Vars
      • Q(a);SBLOCK,XS(F)::QAR2(G)
      • S(b);N_GUARD,XS(F)::B(A)+R(C)
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