MESON Chess Problem Database

Problem Display
PID: 7550 (4b3/p3p3/Kpk1Nnp1/2P2p1R/8/3Qb3/1R5B/8 w - - 0 1)

Gorbatenko, Yuri Grigorevich

3rd Prize, Na Smenu!, 1991

4b3/p3p3/Kpk1Nnp1/2P2p1R/8/3Qb3/1R5B/8

#2

7 + 9

4827 FIDE Album (1989-1991) 1997
5454 Near Snap 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Bxc5
      • 2.Sd8#
    • 1...Sd5
      • 2.Qb5#
    • 1...f4
      • 2.Qb5#
    • 1...bxc5
      • 2.Sd8#
  • Tries
    • 1.Rc2?
      • threat
        • 2.Sd8#
      • 1...Sd5
        • 2.Qb5#
      • 1...Bf4
        • 2.cxb6#
      • 1...f4
        • 2.Qb5#
      • 1...Bd4!
    • 1.Rxf5?
      • threat
        • 2.Sd8#
        • 2.Qb5#
      • 1...Bd4
        • 2.Qb5#
      • 1...Sd5
        • 2.Qb5#
        • 2.Qxd5#
      • 1...Bf4
        • 2.Qb5#
      • 1...b5
        • 2.Sd8#
        • 2.Qxb5#
      • 1...gxf5!
  • Keys
    • 1.cxb6!
      • threat
        • 2.Qb5#
      • 1...Bf4
        • 2.Rc2#
      • 1...Bc5
        • 2.Sd8#
      • 1...f4
        • 2.Sd8#

This anticipates 29663(1992)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • B(a);SBLOCK,XP(D)::S(G)
    • S(e);SBLOCK::QAB1(C)
    • P(b);::QAB1(C)
    • P(c);SBLOCK,XP(D)::S(G)
  • Tries
    • Try
      • R(A);
      • Threat
        • S(G)
      • Vars
        • S(e);SBLOCK::QAB1(C)
        • B(a);N_GUARD::R(A)+P(D),XP(c)
        • P(b);::QAB1(C)
      • Refutation
        • B(a);
    • Try
      • R(E);XP(b)
      • Threat
        • DUALS(2)
      • Vars
        • B(a);::QAB1(C)
      • Refutation
        • P(f);XR(E)
  • Actual
    • P(D);XP(c)
    • Threat
      • QAB1(C)
    • Vars
      • B(a);N_GUARD::R(A)
      • B(a);SBLOCK::S(G)
      • P(b);::S(G)
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