MESON Chess Problem Database

Problem Display
PID: 227283 (8/3p3K/5p2/1Q6/4k3/3r1N2/2n2nPB/1B3N2 w - - 0 1)

Fastosky, Pedro

Tijdschrift vd KNSB, 1957

8/3p3K/5p2/1Q6/4k3/3r1N2/2n2nPB/1B3N2

#2

7 + 6

15601 Albrecht-Leiss-Degener Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Re3
      • 2.S1d2#
    • 1...Se3
      • 2.S1d2#
    • 1...Sd4
      • 2.S3d2#
    • 1...f5
      • 2.Qe5#
  • Tries
    • 1.S3d2+?
      • 1...Kd4
        • 2.Qc4#
      • 1...Rxd2!
    • 1.Sg5+?
      • 1...fxg5
        • 2.Qe5#
      • 1...Kd4!
  • Keys
    • 1.Kg6!
      • threat
        • 2.Qf5#
      • 1...Rxf3
        • 2.Qc4#
      • 1...Rd5
        • 2.Qe2#
      • 1...Se3
        • 2.S1d2#
      • 1...Sd4
        • 2.S3d2#
      • 1...f5
        • 2.Qe5#
        • 2.Qxf5#
      • 1...d5
        • 2.Qe8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • R(c);N_GUARD,P_SPINS(a),SBLOCK::S(B)
    • S(a);P_SPINR(c),SBLOCK::S(B)
    • S(a);P_SPINR(c),SBLOCK::S(E)
    • P(e);N_GUARD::QAR1(F)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(d);P-FLIGHT::QAR1(F)
      • Refutation
        • R(c);P_SPINS(a),XS(E)
    • Try
      • S(E);CHECK
      • Vars
        • P(e);XS(E)::QAR1(F)
      • Refutation
        • K(d);P-FLIGHT
  • Actual
    • K(G);S_FLIGHT
    • Threat
      • QAB1(F)
    • Vars
      • R(c);N_GUARD,P_SPINS(a),XS(E)::QAR2(F)
      • R(c);OGATE,P_SPINS(a),SBLOCK::QAR2(F)
      • S(a);P_SPINR(c),SBLOCK::S(B)
      • S(a);P_SPINR(c),SBLOCK::S(E)
      • P(f);OGATE,SBLOCK::QAR(F)
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Developed and maintained by Brian Stephenson.
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