MESON Chess Problem Database

Problem Display
PID: 87739 (8/R2Bp3/2pk1p2/R2p1p2/3B1p2/5K2/8/8 w - - 0 1)

Quah, James

The Problemist, 1992

8/R2Bp3/2pk1p2/R2p1p2/3B1p2/5K2/8/8

#2

5 + 7

14772 Creative and Imaginative Chess Concepts 2007
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...c5
      • 2.R5a6#
    • 1...e5
      • 2.Bc5#
  • Tries
    • 1.Kxf4?
      • threat
        • 2.Bc5#
      • 1...c5
        • 2.Bxc5#
        • 2.R5a6#
      • 1...e5+!
    • 1.Bxf5?
      • threat
        • 2.Rd7#
      • 1...c5
        • 2.R5a6#
      • 1...e6!
    • 1.Be6?
      • 1...c5
        • 2.R5a6#
      • 1...Kxe6!
    • 1.Rb7?
      • 1...e5
        • 2.Bc5#
      • 1...c5
        • 2.Ra6#
      • 1...e6!
  • Keys
    • 1.Bc8!
      • 1...c5
        • 2.R5a6#
      • 1...e5
        • 2.Bc5#
      • 1...e6
        • 2.Rd7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(d);OGATEB::R(C)
    • P(g);SBLOCK::B(B)
  • Tries
    • Try
      • K(A);P-FLIGHT,XP(a)
      • Threat
        • B(B)
      • Refutation
        • P(g);CHECK
    • Try
      • B(E);XP(c)
      • Threat
        • R1(D)
      • Vars
        • P(d);OGATEB::R(C)
      • Refutation
        • P(g);
    • Try
      • B(E);
      • Vars
        • P(d);OGATEB::R(C)
      • Refutation
        • K(e);P-FLIGHT,XB(E)
    • Try
      • R(D);
      • Vars
        • P(g);SBLOCK::B(B)
        • P(d);OGATEB::R(C)
      • Refutation
        • P(g);
  • Actual
    • B(E);
    • Vars
      • P(d);OGATEB::R(C)
      • P(g);SBLOCK::B(B)
      • P(g);SBLOCK::R1(D)
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