MESON Chess Problem Database

Problem Display
PID: 110342 (r5K1/k2PP2R/8/1Q6/8/8/8/8 w - - 0 1)

Mlynka, Karol

Pat a Mat, 1986

r5K1/k2PP2R/8/1Q6/8/8/8/8

#2

5 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.d8Q?
      • threat
        • 2.Qb6#
        • 2.e8Q#
        • 2.e8S#
        • 2.e8B#
        • 2.e8R#
      • 1...Rxd8+
        • 2.exd8Q#
        • 2.exd8R#
      • 1...Rb8
        • 2.Qdxb8#
      • 1...Rc8!
    • 1.e8Q?
      • threat
        • 2.d8Q#
        • 2.d8S#
        • 2.d8B#
        • 2.d8R#
      • 1...Rxe8+
        • 2.dxe8Q#
        • 2.dxe8R#
      • 1...Rb8
        • 2.Qexb8#
      • 1...Rc8
        • 2.dxc8Q#
        • 2.dxc8R#
      • 1...Rd8!
  • Keys
    • 1.d8S!
      • threat
        • 2.Qb7#
        • 2.e8Q#
        • 2.e8S#
        • 2.e8B#
        • 2.e8R#
      • 1...Rxd8+
        • 2.exd8Q#
        • 2.exd8R#
      • 1...Rb8
        • 2.Qa5#
      • 1...Rc8
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = WHITE_IN_CHECK
  • Tries
    • Try
      • P(B);P_SPINQ(B)
      • Threat
        • DUALS(5)
      • Vars
        • R(b);CHECK,OGATE,XQ(B)::PXR(b)=Q
        • R(b);N_GUARD::QAB1(B),XR(b)
      • Refutation
        • R(b);
    • Try
      • P(C);P_SPINQ(C)
      • Threat
        • DUALS(4)
      • Vars
        • R(b);CHECK,OGATE,XQ(C)::PXR(b)=Q
        • R(b);N_GUARD::QAB1(C),XR(b)
        • R(b);OGATE::PXR(b)=Q
      • Refutation
        • R(b);
  • Actual
    • P(B);P_SPINS(B)
    • Threat
      • DUALS(5)
    • Vars
      • R(b);CHECK,OGATE,XS(B)::PXR(b)=Q
      • R(b);SBLOCK::QAR2(A)
      • R(b);::QAR1(A)
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