MESON Chess Problem Database

Problem Display
PID: 264381 (5n2/1K1p4/p2p2r1/1ppk4/r1N4Q/nN3R2/8/7b w - - 0 1)

Pribyl, Vaclav

3rd Prize, Prace, 1955

(First published on Sat Dec 24 1955)

5n2/1K1p4/p2p2r1/1ppk4/r1N4Q/nN3R2/8/7b

#2

5 + 11

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Ke6
      • 2.Qe4#
    • 1...Re6
      • 2.Rd3#
    • 1...Se6
      • 2.Rf5#
  • Tries
    • 1.Qd4+?
      • 1...Ke6
        • 2.Qe4#
        • 2.Qxd6#
      • 1...cxd4!
  • Keys
    • 1.Qe1!
      • threat
        • 2.Sb6#
      • 1...Kxc4
        • 2.Qe4#
      • 1...Rxc4
        • 2.Rf5#
      • 1...Sxc4
        • 2.Rd3#
      • 1...bxc4
        • 2.Rf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • K(f);N_GUARD,P_PINR(B),S_FLIGHT::QAR2(D)
    • R(i);SBLOCK::R(B)
    • S(k);SBLOCK::R(B)
  • Tries
    • Try
      • Q(D);CHECK
      • Refutation
        • P(e);XQ(D)
  • Actual
    • Q(D);
    • Threat
      • S(C)
    • Vars
      • K(f);N_GUARD,P_PINR(B),S_FLIGHT,XS(C)::QAR2(D)
      • R(c);SBLOCK,XS(C)::R(B)
      • S(b);SBLOCK,XS(C)::R(B)
      • P(d);SBLOCK,XS(C)::R(B)
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