MESON Chess Problem Database

Problem Display
PID: 172280 (1BK5/2P5/k7/2Q5/8/8/1r6/7B w - - 0 1)

Andreev, Aleksandr Grigorevich

Vecherni Krasnodar, 1996

1BK5/2P5/k7/2Q5/8/8/1r6/7B

#2

5 + 2

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ra2
      • 2.Bb7#
    • 1...Rc2
      • 2.Bb7#
    • 1...Rd2
      • 2.Bb7#
    • 1...Re2
      • 2.Bb7#
    • 1...Rf2
      • 2.Bb7#
    • 1...Rh2
      • 2.Bb7#
    • 1...Rb5
      • 2.Qa7#
    • 1...Rb7
      • 2.Bxb7#
    • 1...Rxb8+
      • 2.cxb8S#
  • Tries
    • 1.Qc6+?
      • 1...Rb6
        • 2.Qa4#
      • 1...Ka5!
  • Keys
    • 1.Bc6!
      • threat
        • 2.Qa7#
      • 1...Rxb8+
        • 2.cxb8S#
      • 1...Rb6
        • 2.Qa3#
      • 1...Rb7
        • 2.Bxb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • R(a);N_GUARD::B(A)
    • R(a);SBLOCK::QAR1(B)
    • R(a);N_GUARD::B(A),XR(a)
    • R(a);CHECK,OGATE,XB(D)::PXR(a)=S
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • R(a);P_SPINR(a),SBLOCK::QAR2(B)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • B(A);
    • Threat
      • QAR1(B)
    • Vars
      • R(a);CHECK,OGATE,XB(D)::PXR(a)=S
      • R(a);SBLOCK::QAR(B)
      • R(a);N_GUARD::B(A),XR(a)
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