MESON Chess Problem Database

Problem Display
PID: 189425 (1Q6/2K5/2N3B1/2p5/p1k5/5P2/pP6/8 w - - 0 1)

Kejr, Josef

Vynalezy a pokroky, 1911

1Q6/2K5/2N3B1/2p5/p1k5/5P2/pP6/8

#2

6 + 4

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Bf7#
      • 2.Qg8#
  • Tries
    • 1.Bd3+?
      • 1...Kd5
        • 2.Qg8#
      • 1...Kxd3!
    • 1.Qb4+?
      • 1...Kd5
        • 2.Bf7#
        • 2.Qe4#
      • 1...cxb4!
    • 1.Qb5+?
      • 1...Kd5
        • 2.Bf7#
      • 1...Kxb5!
  • Keys
    • 1.Kb6!
      • threat
        • 2.Qg8#
      • 1...Kb3
        • 2.Kxc5#
      • 1...Kd5
        • 2.Bf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(D);CHECK
      • Vars
        • K(c);S_FLIGHT::QAB(F)
      • Refutation
        • K(c);S_FLIGHT,XB(D)
    • Try
      • Q(F);CHECK
      • Refutation
        • P(d);XQ(F)
    • Try
      • Q(F);CHECK
      • Vars
        • K(c);P_SPINP(d),S_FLIGHT::B(D)
      • Refutation
        • K(c);S_FLIGHT,XQ(F)
  • Actual
    • K(E);S_FLIGHT
    • Threat
      • QAB(F)
    • Vars
      • K(c);S_FLIGHT::QAR(F)+K(E),XP(d)
      • K(c);S_FLIGHT::B(D)
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