MESON Chess Problem Database

Problem Display
PID: 205501 (5Q2/8/5BN1/3p1b2/4k3/8/7K/2N5 w - - 0 1)

Beck, Jaroslav

Casopis ceskoslovenskych sachistu, 1925

5Q2/8/5BN1/3p1b2/4k3/8/7K/2N5

#2

5 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Qb4+?
      • 1...Ke3
        • 2.Qf4#
      • 1...Kf3
        • 2.Qf4#
      • 1...d4!
    • 1.Qe7+?
      • 1...Kf3
        • 2.Qe2#
      • 1...Be6!
    • 1.Qe8+?
      • 1...Kf3
        • 2.Qe2#
      • 1...Be6!
  • Keys
    • 1.Bg5!
      • 1...Kf3
        • 2.Qxf5#
      • 1...Kd4
        • 2.Qb4#
      • 1...Bxg6
        • 2.Qf4#
      • 1...Bh3
        • 2.Qf4#
      • 1...Bg4
        • 2.Qf4#
      • 1...Be6
        • 2.Qf4#
      • 1...Bd7
        • 2.Qf4#
      • 1...Bc8
        • 2.Qf4#
      • 1...d4
        • 2.Qa8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT::QAB1(E)
        • K(a);OGATE,S_FLIGHT::QAR1(E)
      • Refutation
        • P(b);P_SPINP(b)
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(E)
      • Refutation
        • B(c);P_SPINB(c)
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(E)
      • Refutation
        • B(c);P_SPINB(c)
  • Actual
    • B(C);
    • Vars
      • K(a);P_SPINB(c),S_FLIGHT::QAR2(E),XB(c)
      • K(a);P-FLIGHT::QAR2(E)
      • B(c);OGATE,XS(D)::QAR1(E)
      • B(c);OGATE::QAR1(E)
      • P(b);OGATEB,SBLOCK::QAB(E)
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Developed and maintained by Brian Stephenson.
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