MESON Chess Problem Database

Problem Display
PID: 90645 (8/N4p2/4PB2/1Npk1BKR/7R/3p3P/P2P4/8 w - - 0 1)

Touw Hian Bwee

Die Schwalbe, 1968

8/N4p2/4PB2/1Npk1BKR/7R/3p3P/P2P4/8

#2

11 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Kf4?
      • 1...Kc4
        • 2.Ke5#
      • 1...c4
        • 2.Bg4#
      • 1...fxe6!
    • 1.Be4+?
      • 1...Kc4
        • 2.Bh1#
        • 2.Bg2#
        • 2.Bf3#
        • 2.Bc6#
        • 2.Bb7#
        • 2.Ba8#
      • 1...Kxe6!
    • 1.Ra4?
      • 1...fxe6
        • 2.Be4#
      • 1...c4!
    • 1.Re4?
      • 1...c4
        • 2.Re5#
      • 1...fxe6!
    • 1.Rh7?
      • 1...fxe6
        • 2.Rd7#
      • 1...c4!
  • Keys
    • 1.Bg4!
      • 1...Kc4
        • 2.Bf3#
      • 1...Ke4
        • 2.Sc3#
      • 1...fxe6
        • 2.Bf3#
      • 1...c4
        • 2.Kf4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(G);S_FLIGHT
      • Vars
        • K(c);S_FLIGHT::R(D)+K(G)
        • P(b);SBLOCK::R(H)+B(F)
      • Refutation
        • P(d);XP(I)
    • Try
      • B(F);CHECK
      • Refutation
        • K(c);S_FLIGHT,XP(I)
    • Try
      • R(D);
      • Vars
        • P(d);SBLOCK,XP(I)::B(F)
      • Refutation
        • P(b);
    • Try
      • R(D);
      • Vars
        • P(b);SBLOCK::R1(D)
      • Refutation
        • P(d);XP(I)
    • Try
      • R(H);
      • Vars
        • P(d);OGATE,XP(I)::R(H)
      • Refutation
        • P(b);
  • Actual
    • B(F);
    • Vars
      • K(c);S_FLIGHT::R(D)+B(F)
      • K(c);S_FLIGHT::S(E)
      • P(d);SBLOCK,XP(I)::B(F)
      • P(b);SBLOCK::R(H)+K(G)
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Developed and maintained by Brian Stephenson.
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