MESON Chess Problem Database

Problem Display
PID: 93883 (4Q3/8/8/1p1k4/2p1N3/K3P3/BP6/8 w - - 0 1)

Sivak, Bohuslav

Album Ceskoslovenskych Sachovych, 1973

4Q3/8/8/1p1k4/2p1N3/K3P3/BP6/8

#2

6 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Bb1?
      • 1...c3
        • 2.Ba2#
      • 1...b4+!
    • 1.b3?
      • 1...cxb3
        • 2.Bxb3#
      • 1...c3
        • 2.b4#
      • 1...b4+!
  • Keys
    • 1.b4!
      • 1...cxb4 ep
        • 2.Bxb3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(A);N_PINP(a)
      • Vars
        • P(a);OGATEB::B(A)
      • Refutation
        • P(b);CHECK
    • Try
      • P(B);N_PINP(a)
      • Vars
        • P(a);OGATE,P_SPINP(a),XP(B)::B(A),XP(a)
        • P(a);::B(A)+P(B)
      • Refutation
        • P(b);CHECK
  • Actual
    • P(B);
    • Vars
      • P(a);EP,OGATEB,XP(B)::B(A),XP(a)
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