MESON Chess Problem Database

Problem Display
PID: 208132 (4Q3/kN6/B7/3N4/1p6/1p6/nK6/R7 w - - 0 1)

Shinkman, William Anthony

Deutsche Schachzeitung, 1875

4Q3/kN6/B7/3N4/1p6/1p6/nK6/R7

#2

6 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Sa5?
      • 1...Sc1
        • 2.Sc6#
      • 1...Sc3
        • 2.Sc6#
      • 1...Kxa6!
    • 1.Sd6?
      • 1...Kxa6
        • 2.Qa4#
        • 2.Qa8#
      • 1...Sc1
        • 2.Sb5#
      • 1...Sc3!
  • Keys
    • 1.Sd8!
      • 1...Kxa6
        • 2.Qa4#
      • 1...Ka8
        • 2.Sc6#
      • 1...Kb8
        • 2.Sc6#
      • 1...Sc1
        • 2.Sc6#
      • 1...Sc3
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);
      • Vars
        • S(a);::S(E)
      • Refutation
        • K(d);P-FLIGHT,XB(D)
    • Try
      • S(E);
      • Vars
        • S(a);::S(E)
      • Refutation
        • S(a);
  • Actual
    • S(E);
    • Vars
      • K(d);OGATEB,P-FLIGHT,P_SPINS(a),XB(D)::QAR2(F)
      • K(d);P-FLIGHT::QAR(F)+S(E)
      • K(d);S_FLIGHT::QAR(F)+S(E),DCHECK
      • S(a);::S(E)
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