MESON Chess Problem Database

Problem Display
PID: 86933 (1b6/8/2r5/2qkB3/3N1Pp1/1P6/4Q1K1/3R4 w - - 0 1)

Shanshin, Valery Yurevich

Vasilenko, Anatoly Grigorovich

Politika Meredith Ty., 1998

1b6/8/2r5/2qkB3/3N1Pp1/1P6/4Q1K1/3R4

#2

7 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bxe5
      • 2.Qxe5#
    • 1...g3
      • 2.Qf3#
  • Tries
    • 1.Bxb8?
      • threat
        • 2.Qe5#
      • 1...Qd6
        • 2.Se6#
      • 1...Qe7
        • 2.Se6#
      • 1...Re6
        • 2.Qxe6#
      • 1...Qc2!
    • 1.Qc4+?
      • 1...Ke4
        • 2.Re1#
      • 1...Qxc4!
  • Keys
    • 1.Bd6!
      • threat
        • 2.Qe5#
        • 2.Qe6#
      • 1...Kxd6
        • 2.Sb5#
      • 1...Qxd4
        • 2.Qe5#
      • 1...Qxd6
        • 2.Se6#
      • 1...Rxd6
        • 2.Qe5#
      • 1...Bxd6
        • 2.Qe6#
      • 1...Qc2
        • 2.Sxc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 2
  • Sets
    • B(e);OGATE,XB(G)::QAR1(B),XB(e)
    • P(a);N_GUARD::QAB(B)
  • Tries
    • Try
      • B(G);XB(e)
      • Threat
        • QAR1(B)
      • Vars
        • Q(b);N_GUARD::R(A)+S(E)
        • R(d);N_GUARD::QAB1(B),XR(d)
      • Refutation
        • Q(b);P_PINQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);S_FLIGHT::R(A)
      • Refutation
        • Q(b);XQ(B)
  • Actual
    • B(G);
    • Threat
      • DUALS(2)
    • Vars
      • K(c);P-FLIGHT,XB(G)::R(A)+S(E),DCHECK
      • Q(b);P_SPINQ(b),XS(E)::QAR1(B)
      • Q(b);N_GUARD,SBLOCK,XB(G)::R(A)+S(E)
      • R(d);XB(G)::QAR1(B)
      • B(e);XB(G)::QAB1(B)
      • Q(b);N_GUARD,P_PINQ(B)::R(A)+S(E),XQ(b)
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