MESON Chess Problem Database

Problem Display
PID: 107930 (1B6/1R6/8/2ppp3/N2Pk1P1/6P1/4K3/8 w - - 0 1)

Coutinho, Jose Ernesto

Canadian Chess Chat, 1982

1B6/1R6/8/2ppp3/N2Pk1P1/6P1/4K3/8

#2

7 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...cxd4
      • 2.Sc5#
    • 1...exd4
      • 2.Sxc5#
      • 2.Re7#
  • Tries
    • 1.Bxe5?
      • threat
        • 2.Sc3#
        • 2.Sxc5#
      • 1...c4
        • 2.Sc3#
        • 2.Sc5#
      • 1...cxd4!
    • 1.dxc5?
      • 1...Kd4
        • 2.Rb4#
      • 1...d4!
  • Keys
    • 1.Ba7!
      • 1...Kxd4
        • 2.Rb4#
      • 1...cxd4
        • 2.Sc5#
      • 1...exd4
        • 2.Re7#
      • 1...c4
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(b);SBLOCK,XP(D)::S(C)
  • Tries
    • Try
      • B(G);XP(d)
      • Threat
        • DUALS(2)
      • Refutation
        • P(b);XP(D)
    • Try
      • P(D);XP(b)
      • Vars
        • K(a);P-FLIGHT::R(F)
      • Refutation
        • P(c);
  • Actual
    • B(G);
    • Vars
      • K(a);OGATEB,P-FLIGHT,P_SPINP(b),XP(D)::R(F)
      • P(b);SBLOCK,XP(D)::S(C)
      • P(d);OGATEB,SBLOCK,XP(D)::R(F)
      • P(b);::S(C)
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