MESON Chess Problem Database

Problem Display
PID: 89349 (8/1B3pN1/1Q6/4kp1n/K2N1rP1/1p2b3/3n3B/3R1r2 w - - 0 1)

Zilahi, Zoltan

The Problemist, 1931

8/1B3pN1/1Q6/4kp1n/K2N1rP1/1p2b3/3n3B/3R1r2

#2

8 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...f6
      • 2.Qc5#
  • Tries
    • 1.Sxh5?
      • threat
        • 2.Qc5#
        • 2.Qf6#
      • 1...Bxd4
        • 2.Qf6#
      • 1...f6
        • 2.Qc5#
        • 2.Qxf6#
      • 1...Se4!
    • 1.Se8?
      • threat
        • 2.Qc5#
        • 2.Qd6#
      • 1...Bxd4
        • 2.Qd6#
      • 1...Sc4
        • 2.Qc5#
        • 2.Qb5#
      • 1...Sf6
        • 2.Qd6#
        • 2.Qxf6#
      • 1...Se4!
  • Keys
    • 1.g5!
      • threat
        • 2.Qc5#
      • 1...Bxd4
        • 2.Qc7#
      • 1...Se4
        • 2.Sc6#
      • 1...Sf6
        • 2.Qxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • P(i);SBLOCK::QAR2(F)
  • Tries
    • Try
      • S(H);XS(h)
      • Threat
        • DUALS(2)
      • Vars
        • B(d);SBLOCK,XS(D)::QAB1(F)
      • Refutation
        • S(b);N_PINS(D)
    • Try
      • S(H);
      • Threat
        • DUALS(2)
      • Vars
        • B(d);XS(D)::QAB1(F)
      • Refutation
        • S(b);N_PINS(D)
  • Actual
    • P(E);
    • Threat
      • QAR2(F)
    • Vars
      • B(d);SBLOCK,XS(D)::QAB(F)
      • S(b);N_PINS(D),SBLOCK::S(D)
      • S(h);N_GUARD::QAB1(F),XS(h)
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