MESON Chess Problem Database

Problem Display
PID: 92770 (1Q6/1Br3R1/4P1P1/b1P1k3/3N1R2/2n3Pb/7n/K7 w - - 0 1)

Zidek, Alexander

Schach-Echo, 1990

1Q6/1Br3R1/4P1P1/b1P1k3/3N1R2/2n3Pb/7n/K7

#2

10 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bb4
      • 2.Qxc7#
  • Tries
    • 1.Re7?
      • threat
        • 2.Qh8#
      • 1...Sg4
        • 2.Sf3#
      • 1...Sd5
        • 2.Sc6#
      • 1...Se4!
    • 1.Rgf7?
      • threat
        • 2.Qh8#
      • 1...Se4
        • 2.Rxe4#
      • 1...Sg4
        • 2.R7f5#
      • 1...Sd5!
  • Keys
    • 1.Rd7!
      • threat
        • 2.Qh8#
      • 1...Sg4
        • 2.Rf5#
      • 1...Se4
        • 2.Rd5#
      • 1...Sd5
        • 2.Rxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(d);N_GUARD::QAB(J),XR(f)
  • Tries
    • Try
      • R(I);
      • Threat
        • QAB(J)
      • Vars
        • S(a);N_GUARD::S(C)
        • S(b);SBLOCK::S(C)
      • Refutation
        • S(b);
    • Try
      • R(I);
      • Threat
        • QAB(J)
      • Vars
        • S(b);N_GUARD::R1(D),XS(b)
        • S(a);S_CUTB(c)::R1(I)
      • Refutation
        • S(b);
  • Actual
    • R(I);
    • Threat
      • QAB(J)
    • Vars
      • S(a);S_CUTB(c)::R1(D)
      • S(b);N_GUARD::R1(I)
      • S(b);N_GUARD::R1(I),XS(b)
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