MESON Chess Problem Database

Problem Display
PID: 189861 (b7/8/3P3R/3k4/8/N7/3KQ3/8 w - - 0 1)

Schwede, Constantin

Deutsche Schachzeitung, 1912

b7/8/3P3R/3k4/8/N7/3KQ3/8

#2

5 + 2

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Kc6
      • 2.Qb5#
  • Tries
    • 1.Re6?
      • threat
        • 2.Qc4#
      • 1...Kd4
        • 2.Qc4#
        • 2.Qe5#
      • 1...Kc6
        • 2.Qb5#
      • 1...Kc5!
    • 1.Qe5+?
      • 1...Kc6
        • 2.Qb5#
      • 1...Kxe5!
  • Keys
    • 1.Ke3!
      • threat
        • 2.Qb5#
      • 1...Kc5
        • 2.Qb5#
      • 1...Ke5
        • 2.Qh5#
      • 1...Kc6
        • 2.Qb5#
      • 1...Bc6
        • 2.Qh5#

This is a version of 121536

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAB1(B)
  • Tries
    • Try
      • R(E);
      • Threat
        • QAB1(B)
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT,XQ(B)
  • Actual
    • K(A);S_FLIGHT
    • Threat
      • QAR2(B)
    • Vars
      • K(a);P-FLIGHT::QAR1(B)
      • K(a);P-FLIGHT::QAR(B)
      • K(a);S_FLIGHT::QAB1(B)
      • B(b);SBLOCK::QAR(B)
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