MESON Chess Problem Database

Problem Display
PID: 182243 (8/8/2K2p2/4kp2/4p3/4Q1R1/8/8 w - - 0 1)

Moll, Kurt

Deutsche Schachzeitung, 1906

8/8/2K2p2/4kp2/4p3/4Q1R1/8/8

#2

3 + 4

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Kd7?
      • 1...f4
        • 2.Qc5#
      • 1...Kd5!
    • 1.Qd2?
      • threat
        • 2.Qd6#
      • 1...e3
        • 2.Qxe3#
      • 1...f4
        • 2.Qd5#
      • 1...Ke6!
    • 1.Qc5+?
      • 1...Kf4
        • 2.Qd6#
      • 1...Ke6!
  • Keys
    • 1.Qb3!
      • 1...Kd4
        • 2.Qd5#
        • 2.Qc3#
      • 1...Kf4
        • 2.Qb8#
      • 1...e3
        • 2.Qxe3#
      • 1...f4
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Vars
        • P(c);SBLOCK::QAR2(A)
      • Refutation
        • K(b);N_SPINP(a),P-FLIGHT
    • Try
      • Q(A);N_PINP(a)
      • Threat
        • QAB1(A)
      • Vars
        • P(a);OGATEB::QAR2(A),XP(a)
        • P(c);SBLOCK::QAR1(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);CHECK,N_PINP(a)
      • Vars
        • K(b);S_FLIGHT::QAB(A)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • Q(A);N_PINP(a)
    • Vars
      • K(b);S_FLIGHT::QAB(A)
      • P(a);OGATEB::QAR2(A),XP(a)
      • P(c);SBLOCK::QAR1(A)
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