MESON Chess Problem Database

Problem Display
PID: 205743 (2BQ4/4p3/3p1p2/4k3/5R2/8/3K4/8 w - - 0 1)

Steding, H

Funkschach, 1925

2BQ4/4p3/3p1p2/4k3/5R2/8/3K4/8

#2

4 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...d5
      • 2.Qc7#
  • Tries
    • 1.Qa5+?
      • 1...d5
        • 2.Qc7#
      • 1...Kxf4!
    • 1.Qxe7+?
      • 1...Kxf4
        • 2.Qe3#
      • 1...Kd5!
  • Keys
    • 1.Qb6!
      • threat
        • 2.Qd4#
      • 1...Kxf4
        • 2.Qe3#
      • 1...Kd5
        • 2.Qb5#
      • 1...d5
        • 2.Qc7#
        • 2.Qb8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • P(b);OGATEB,SBLOCK::QAB(D)
  • Tries
    • Try
      • Q(D);CHECK
      • Vars
        • P(b);OGATEB,P_SPINP(b),SBLOCK::QAB(D)
      • Refutation
        • K(a);S_FLIGHT,XR(B)
    • Try
      • Q(D);CHECK,XP(d)
      • Vars
        • K(a);OGATE,S_FLIGHT,XR(B)::QAB1(D)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(D);
    • Threat
      • QAB1(D)
    • Vars
      • K(a);S_FLIGHT,XR(B)::QAB1(D)
      • K(a);P-FLIGHT::QAR2(D)
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