MESON Chess Problem Database

Problem Display
PID: 194006 (k7/1p4Q1/1p6/3RB3/8/K7/8/8 w - - 0 1)

Massmann, Wilhelm Karl Heinrich

Deutsche Schachzeitung, 1917

k7/1p4Q1/1p6/3RB3/8/K7/8/8

#2

4 + 3

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Rd4?
      • threat
        • 2.Ra4#
      • 1...Ka7
        • 2.Ra4#
      • 1...b5!
    • 1.Qg4?
      • threat
        • 2.Qa4#
      • 1...Ka7
        • 2.Qa4#
      • 1...b5!
    • 1.Qd7?
      • threat
        • 2.Qa4#
      • 1...Ka7
        • 2.Qa4#
      • 1...b5!
  • Keys
    • 1.Qg1!
      • 1...Ka7
        • 2.Ra5#
      • 1...b5
        • 2.Rd8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);
      • Threat
        • R(B)
      • Vars
        • K(c);P-FLIGHT,P_SPINP(b)::R(B)
      • Refutation
        • P(a);
    • Try
      • Q(D);
      • Threat
        • QAR(D)
      • Vars
        • K(c);P-FLIGHT::QAR(D)
      • Refutation
        • P(a);
    • Try
      • Q(D);
      • Threat
        • QAR(D)
      • Vars
        • K(c);P-FLIGHT,P_SPINP(b)::QAR(D)
      • Refutation
        • P(a);
  • Actual
    • Q(D);
    • Vars
      • K(c);P-FLIGHT,P_SPINP(a)::R(B)
      • P(a);::R(B)
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