MESON Chess Problem Database

Problem Display
PID: 92033 (4k2r/5p1p/5Q2/8/8/4p3/8/R3K3 w Qk - 0 1)

Skuja, Roberts

Wiener Schachzeitung, 1934

4k2r/5p1p/5Q2/8/8/4p3/8/R3K3

#2

3 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kf8
      • 2.Ra8#
  • Tries
    • 1.Rd1?
      • threat
        • 2.Rd8#
        • 2.Qd8#
      • 1...Kf8
        • 2.Rd8#
      • 1...0-0!
    • 1.Ra7?
      • threat
        • 2.Qe7#
        • 2.Qxh8#
      • 1...Kf8
        • 2.Ra8#
        • 2.Qxh8#
        • 2.Qxf7#
      • 1...Rf8
        • 2.Qe7#
      • 1...Rg8
        • 2.Qe7#
      • 1...0-0!
    • 1.Qxf7+?
      • 1...Kd8
        • 2.Ra8#
      • 1...Kxf7!
  • Keys
    • 1.0-0-0!
      • threat
        • 2.Rd8#
        • 2.Qd8#
      • 1...Kf8
        • 2.Rd8#
      • 1...0-0
        • 2.Rg1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(d);P-FLIGHT,P_SPINP(b)::R(A)
  • Tries
    • Try
      • R(A);
      • Threat
        • DUALS(2)
      • Vars
        • K(d);P-FLIGHT,P_SPINP(b)::R(A)
      • Refutation
        • K(d);0-0
    • Try
      • R(A);
      • Threat
        • DUALS(2)
      • Vars
        • R(e);::QAR1(C)
      • Refutation
        • K(d);0-0
    • Try
      • Q(C);CHECK,XP(b)
      • Vars
        • K(d);P-FLIGHT::R(A)
      • Refutation
        • K(d);S_FLIGHT,XQ(C)
  • Actual
    • K(B);0-0-0
    • Threat
      • DUALS(2)
    • Vars
      • K(d);P-FLIGHT,P_SPINP(b)::R(A)
      • K(d);0-0,OGATEB::R(A)
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