MESON Chess Problem Database

Problem Display
PID: 142320 (2B1R3/5p1b/2ppNp2/1p4q1/1P2kp2/1P3N1Q/K1P2P2/8 w - - 0 1)

Ulehla, F

La Settimana Enigmistica, 1933

(First published on Sat Apr 1 1933)

2B1R3/5p1b/2ppNp2/1p4q1/1P2kp2/1P3N1Q/K1P2P2/8

#2

10 + 9

14868 Pirnie Collection 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Sc7#
    • 1...Qh4
      • 2.Sc7#
    • 1...Qh6
      • 2.Sc7#
    • 1...Qg1
      • 2.Sc7#
    • 1...Qg2
      • 2.Sc7#
    • 1...Qd5
      • 2.Sc5#
      • 2.Seg5#
    • 1...Qg6
      • 2.Sc7#
    • 1...Qg7
      • 2.Sc7#
    • 1...d5
      • 2.Sc5#
      • 2.Sexg5#
  • Keys
    • 1.Qf1!
      • threat
        • 2.Qd3#
      • 1...Kxf3
        • 2.Sd4#
      • 1...Kd5
        • 2.Sc7#
      • 1...Kf5
        • 2.Sf8#
      • 1...Qd5
        • 2.Seg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • K(a);S_FLIGHT::S(H)
    • Q(d);N_GUARD::R(J)+S(H)
  • Actual
    • Q(F);
    • Threat
      • QAB1(F)
    • Vars
      • K(a);S_FLIGHT,XS(E)::S(H)
      • K(a);S_FLIGHT::S(H)
      • K(a);S_FLIGHT::B(I)+S(H)
      • Q(d);P_PINP(D),SBLOCK::R(J)+S(H),DCHECK
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