MESON Chess Problem Database

Problem Display
PID: 245507 (4B3/5P1k/4KP1b/6R1/8/8/8/8 w - - 0 1)

Shumarin, Vladimir Pavlovich

Kudesnik, 2002

4B3/5P1k/4KP1b/6R1/8/8/8/8

#2

5 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Rg7+?
      • 1...Kh8
        • 2.f8Q#
        • 2.f8R#
      • 1...Bxg7!
    • 1.f8Q?
      • threat
        • 2.Bg6#
        • 2.Qg8#
      • 1...Bxg5
        • 2.Qg7#
      • 1...Bg7
        • 2.Qxg7#
      • 1...Bxf8!
  • Keys
    • 1.Rh5!
      • 1...Kg6
        • 2.f8S#
      • 1...Kh8
        • 2.Rxh6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(A);CHECK
      • Vars
        • K(b);P-FLIGHT::P=Q
      • Refutation
        • B(a);XR(A)
    • Try
      • P(D);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);N_GUARD,XR(A)::QAR1(D)
        • B(a);N_GUARD::QAR1(D),XB(a)
      • Refutation
        • B(a);XQ(D)
  • Actual
    • R(A);P_PINB(a)
    • Vars
      • K(b);N_SPINB(a),S_FLIGHT::P=S
      • K(b);P-FLIGHT::R(A),XB(a)
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