MESON Chess Problem Database

Problem Display
PID: 237702 (8/8/2R5/8/8/5k1P/2Q4p/4K2b w - - 0 1)

Borovik, Boris V

The Problemist, 1988

8/8/2R5/8/8/5k1P/2Q4p/4K2b

#2

4 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Rc4?
      • threat
        • 2.Qf2#
      • 1...Ke3
        • 2.Qb3#
        • 2.Qe2#
        • 2.Qc3#
      • 1...Kg3!
    • 1.Qd3+?
      • 1...Kg2
        • 2.Rg6#
      • 1...Kf4!
    • 1.Qe4+?
      • 1...Kg3
        • 2.Qg4#
      • 1...Kxe4!
    • 1.Qf5+?
      • 1...Kg2
        • 2.Rg6#
        • 2.Qg4#
      • 1...Kg3
        • 2.Qg4#
      • 1...Ke3!
    • 1.Qe2+?
      • 1...Kg3
        • 2.Qg4#
      • 1...Kf4!
  • Keys
    • 1.Qa4!
      • 1...Kg2
        • 2.Qg4#
      • 1...Ke3
        • 2.Rc3#
      • 1...Kg3
        • 2.Qg4#
      • 1...Bg2
        • 2.Rc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(D);
      • Threat
        • QAR1(B)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);S_FLIGHT::R(D)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR1(B)
      • Refutation
        • K(c);S_FLIGHT,XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR1(B)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);OGATE,P-FLIGHT::QAR1(B)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(c);S_FLIGHT::QAR2(B)
      • K(c);P-FLIGHT::R(D)
      • K(c);P-FLIGHT::QAR1(B)
      • B(a);SBLOCK::R(D)
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