MESON Chess Problem Database

Problem Display
PID: 75925 (8/r6p/2Q2K1k/5R2/5p1p/8/6P1/8 w - - 0 1)

Drabowski, V

Joffart, Daniel

La Cle, 1970

8/r6p/2Q2K1k/5R2/5p1p/8/6P1/8

#2

4 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Kf7#
    • 1...Ra2
      • 2.Kf7#
    • 1...Ra3
      • 2.Kf7#
    • 1...Ra4
      • 2.Kf7#
    • 1...Ra5
      • 2.Kf7#
    • 1...Rf7+
      • 2.Kxf7#
    • 1...Ra8
      • 2.Kf7#
    • 1...f3
      • 2.Qc1#
  • Keys
    • 1.g4!
      • threat
        • 2.Rh5#
      • 1...Rf7+
        • 2.Kxf7#
      • 1...fxg4 ep
        • 2.Qc1#
      • 1...hxg4 ep
        • 2.Qh1#
      • 1...Ra5
        • 2.Kf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • R(d);::QAR(C)+K(D)
    • R(d);CHECK::QAR(C)+K(D),XR(d)
    • P(a);OGATEB::QAB(C)
  • Actual
    • P(A);
    • Threat
      • R1(B)
    • Vars
      • R(d);CHECK::QAR(C)+K(D),XR(d)
      • P(a);EP,OGATEB,XP(A)::QAB(C)
      • P(b);EP,OGATEB,XP(A)::QAR(C)
      • R(d);::QAR(C)+K(D)
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