MESON Chess Problem Database

Problem Display
PID: 225593 (3KnNQ1/8/2p1R3/3k4/1P2R3/3Pn2b/6r1/1B1q1rb1 w - - 0 1)

Limaz, Sergiy V

Praca, 1992

3KnNQ1/8/2p1R3/3k4/1P2R3/3Pn2b/6r1/1B1q1rb1

#2

8 + 9

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bxe6
      • 2.Qxe6#
    • 1...Sc2
      • 2.Ba2#
    • 1...Sc4
      • 2.dxc4#
    • 1...Sg4
      • 2.Rf6#
    • 1...Sf5
      • 2.Rg6#
    • 1...Sd6
      • 2.R6e5#
  • Tries
    • 1.Rf6+?
      • 1...Be6
        • 2.Qxe6#
      • 1...Rxg8!
    • 1.Rg6+?
      • 1...Be6
        • 2.Qxe6#
      • 1...Rf7!
  • Keys
    • 1.Sd7!
      • threat
        • 2.Sb6#
      • 1...Bxe6
        • 2.Qxe6#
      • 1...Sc2
        • 2.Ba2#
      • 1...Sc4
        • 2.dxc4#
      • 1...Sg4
        • 2.Rf6#
      • 1...Sf5
        • 2.Rg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • B(f);OGATE,P_SPINB(f),XR(E)::QAB1(H),XB(f)
    • S(e);N_GUARD,S_CUTQ(a),S_CUTR(d)::B(A)
    • S(e);OGATE::P(B),XS(e)
    • S(e);S_CUTB(f),S_CUTR(d)::QAB(H)+R(E)
    • S(e);S_CUTB(f),S_CUTR(b)::QAB(H)+R(E)
    • S(i);SBLOCK::QAB(H)+R(E),DCHECK
  • Tries
    • Try
      • R(E);CHECK
      • Vars
        • B(f);N_GUARD,P_SPINB(f)::QAB1(H),XB(f)
      • Refutation
        • R(d);XQ(H)
    • Try
      • R(E);CHECK
      • Vars
        • B(f);N_GUARD,P_SPINB(f)::QAB1(H),XB(f)
      • Refutation
        • R(b);P_SPINR(b)
  • Actual
    • S(G);
    • Threat
      • S(G)
    • Vars
      • B(f);OGATE,P_SPINB(f),XR(E)::QAB1(H),XB(f)
      • S(e);N_GUARD,S_CUTQ(a),S_CUTR(d)::B(A)
      • S(e);OGATE::P(B),XS(e)
      • S(e);S_CUTB(f),S_CUTR(d)::QAB(H)+R(E)
      • S(e);S_CUTB(f),S_CUTR(b)::QAB(H)+R(E)
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