MESON Chess Problem Database

Problem Display
PID: 107928 (QB6/5p2/3P1P1p/1PN1k2P/4P2P/1p6/1P2B2K/8 w - - 0 1)

Coultaus, Joseph A

Checkmate, 1904

QB6/5p2/3P1P1p/1PN1k2P/4P2P/1p6/1P2B2K/8

#2

12 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sd7+?
      • 1...Kd4
        • 2.Ba7#
      • 1...Ke6
        • 2.Bg4#
      • 1...Kf4!
    • 1.Qd5+?
      • 1...Kxf6
        • 2.Qd4#
      • 1...Kf4!
    • 1.Qa4?
      • 1...Kxf6
        • 2.Qd4#
      • 1...Kf4!
    • 1.Qa5?
      • 1...Kd4
        • 2.Qc3#
      • 1...Kxf6
        • 2.Qc3#
      • 1...Kf4!
  • Keys
    • 1.Ba7!
      • 1...Kd4
        • 2.Sd7#
      • 1...Kf4
        • 2.Sd3#
      • 1...Kxd6
        • 2.Qb8#
      • 1...Kxf6
        • 2.Qh8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(b);S_FLIGHT::B(L)
        • K(b);P-FLIGHT::B(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(K);CHECK
      • Vars
        • K(b);S_FLIGHT,XP(J)::QAB(K)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(K);
      • Vars
        • K(b);S_FLIGHT,XP(J)::QAB(K)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(K);
      • Vars
        • K(b);S_FLIGHT::QAB1(K)
        • K(b);S_FLIGHT,XP(J)::QAB(K)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • B(L);
    • Vars
      • K(b);S_FLIGHT::B(L)+S(G)
      • K(b);S_FLIGHT::S(G)
      • K(b);OGATEB,S_FLIGHT,XP(I)::QAB(K)
      • K(b);OGATEB,S_FLIGHT,XP(J)::QAB(K)
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