MESON Chess Problem Database

Problem Display
PID: 46537 (1B6/2r5/4Q1p1/8/8/2r2k1P/2p3R1/2K2B2 w - - 0 1)

Chebanov, V

Uralski Problemist, 2002

1B6/2r5/4Q1p1/8/8/2r2k1P/2p3R1/2K2B2

#2

6 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Re3
      • 2.Qg4#
    • 1...Rc4
      • 2.Qe2#
    • 1...Rc5
      • 2.Qe2#
    • 1...Rc6
      • 2.Qe2#
    • 1...Ra7
      • 2.Qe2#
    • 1...Rb7
      • 2.Qe2#
    • 1...Rd7
      • 2.Qe2#
    • 1...Rf7
      • 2.Qe2#
    • 1...Rg7
      • 2.Qe2#
    • 1...Rh7
      • 2.Qe2#
    • 1...Rc8
      • 2.Qe2#
  • Tries
    • 1.Be2+?
      • 1...Kf4
        • 2.Rg4#
      • 1...Kxg2!
    • 1.Bxc7?
      • threat
        • 2.Qe2#
      • 1...Re3
        • 2.Qg4#
      • 1...Rxc7!
    • 1.Rg4?
      • threat
        • 2.Qe2#
      • 1...Kf2
        • 2.Qe2#
      • 1...Re3
        • 2.Qf6#
      • 1...Re7!
  • Keys
    • 1.Re2!
      • threat
        • 2.Qg4#
      • 1...Kg3
        • 2.Qg4#
      • 1...Kf4
        • 2.Qg4#
      • 1...R3c4
        • 2.Qe3#
      • 1...R7c4
        • 2.Bg2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 10
  • Sets
    • R(b);SBLOCK::QAB1(E)
    • R(e);::QAB1(E)
  • Tries
    • Try
      • B(B);CHECK
      • Vars
        • K(c);P-FLIGHT,P_SPINR(e)::R1(C)
      • Refutation
        • K(c);S_FLIGHT,XR(C)
    • Try
      • B(F);XR(e)
      • Threat
        • QAB1(E)
      • Vars
        • R(b);SBLOCK::QAB1(E)
      • Refutation
        • R(b);XB(F)
    • Try
      • R(C);
      • Threat
        • QAB1(E)
      • Vars
        • K(c);P-FLIGHT::QAR1(E)
        • R(b);SBLOCK::QAR(E)
      • Refutation
        • R(e);
  • Actual
    • R(C);
    • Threat
      • QAB1(E)
    • Vars
      • K(c);P-FLIGHT,P_SPINR(e)::QAR1(E)
      • R(b);N_GUARD::QAR1(E)
      • R(e);::B(B)
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Developed and maintained by Brian Stephenson.
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