MESON Chess Problem Database

Problem Display
PID: 6702 (k2r4/2p5/3B4/K7/1R6/R7/8/8 w - - 0 1)

Markus, Gustav

Wiener Schachzeitung, 1932

k2r4/2p5/3B4/K7/1R6/R7/8/8

#2

4 + 3

3295 Einfuhrung in die Welt des Schachproblem 1984
5454 Near Snap 2009
145 StrateGems 2015

SOLUTION

  • SOUND
  • Sets
    • 1...c5
      • 2.Kb6#
    • 1...c6
      • 2.Kb6#
  • Tries
    • 1.Ka4?
      • threat
        • 2.Kb3#
      • 1...Ka7
        • 2.Kb3#
      • 1...Rxd6!
    • 1.Rb5?
      • threat
        • 2.Kb4#
      • 1...Ka7
        • 2.Kb4#
      • 1...c5
        • 2.Kb6#
      • 1...Rxd6!
  • Keys
    • 1.Rb6!
      • threat
        • 2.Kb4#
        • 2.Kb5#
      • 1...cxb6+
        • 2.Kxb6#
      • 1...Ka7
        • 2.Kb5#
      • 1...c5
        • 2.Kb5#
      • 1...c6
        • 2.Kb4#

This anticipates 79275(1963)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(a);::R(A)+K(C)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Threat
        • R(A)+K(C)
      • Vars
        • K(b);P-FLIGHT::R(A)+K(C)
      • Refutation
        • R(c);XB(D)
    • Try
      • R(B);
      • Threat
        • R(A)+K(C)
      • Vars
        • K(b);P-FLIGHT::R(A)+K(C)
        • P(a);::R(A)+K(C)
      • Refutation
        • R(c);XB(D)
  • Actual
    • R(B);
    • Threat
      • DUALS(2)
    • Vars
      • P(a);CHECK,XR(B)::R(A)+K(C),XP(a)
      • K(b);P-FLIGHT::R(A)+K(C)
      • P(a);::R(A)+K(C)
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