MESON Chess Problem Database

Problem Display
PID: 219878 (8/8/5p2/1R1pPNP1/3p1kP1/3K4/4B3/1Q6 w - - 0 1)

Janevski, Zivko

Land og Folk, 1971

(First published on Sun Aug 29 1971)

8/8/5p2/1R1pPNP1/3p1kP1/3K4/4B3/1Q6

#2

8 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...fxe5
      • 2.Qc1#
  • Tries
    • 1.Qb4?
      • 1...Kxe5
        • 2.Qd6#
      • 1...fxe5
        • 2.Qd2#
      • 1...fxg5
        • 2.Qxd4#
      • 1...Kxg5!
  • Keys
    • 1.Qh1!
      • 1...Kxe5
        • 2.Qe4#
      • 1...Kxg5
        • 2.Qh6#
      • 1...fxe5
        • 2.Qc1#
      • 1...fxg5
        • 2.Qh2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(d);SBLOCK,XP(F)::QAB(A)
  • Tries
    • Try
      • Q(A);P_PINP(a)
      • Vars
        • K(b);N_SPINP(a),OGATEB,P_SPINP(c),S_FLIGHT,XP(F)::QAB1(A)
        • P(d);SBLOCK,XP(F)::QAB(A)
        • P(d);SBLOCK,XP(H)::QAR2(A),XP(a)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT,XP(H)
  • Actual
    • Q(A);
    • Vars
      • K(b);P_SPINP(c),S_FLIGHT,XP(F)::QAR1(A)
      • K(b);OGATEB,S_FLIGHT,XP(H)::QAB1(A)
      • P(d);SBLOCK,XP(F)::QAB(A)
      • P(d);SBLOCK,XP(H)::QAB(A)
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