MESON Chess Problem Database

Problem Display
PID: 193596 (1n1q3B/K1p4B/p4n2/2P1k3/3N1N2/8/8/3Q1R2 w - - 0 1)

Fink, Adolf Jay

Prize, American Chess Bulletin, 1915-03

1n1q3B/K1p4B/p4n2/2P1k3/3N1N2/8/8/3Q1R2

#2

8 + 6

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd4
      • 2.Qh5#
    • 1...Sc6+
      • 2.Sxc6#
    • 1...Sd7
      • 2.Sc6#
  • Tries
    • 1.Qg4?
      • threat
        • 2.Sf3#
      • 1...Sc6+
        • 2.Sxc6#
      • 1...Qxd4
        • 2.Qf5#
        • 2.Qh5#
        • 2.Qe6#
        • 2.Qg5#
      • 1...Qd5
        • 2.Sd3#
        • 2.Sg6#
      • 1...Kxd4!
    • 1.Qa1?
      • threat
        • 2.Sc6#
      • 1...Sc6+
        • 2.Sxc6#
      • 1...c6
        • 2.Sxc6#
      • 1...Qxd4!
    • 1.Qd3?
      • threat
        • 2.Qe4#
        • 2.Qe3#
      • 1...Sc6+
        • 2.Sxc6#
      • 1...Qxd4
        • 2.Qf5#
      • 1...Qd5
        • 2.Sg6#
      • 1...Qxh8!
  • Keys
    • 1.Qa4!
      • threat
        • 2.Sf3#
      • 1...Sc6+
        • 2.Sxc6#
      • 1...Qxd4
        • 2.Qe8#
      • 1...Qd5
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • Q(f);P_PINP(E),SBLOCK,XS(C)::QAR(A)
    • S(e);CHECK,N_GUARD::S(C),XS(e)
    • S(e);N_GUARD::S(C)
  • Tries
    • Try
      • Q(A);
      • Threat
        • S(C)
      • Vars
        • S(e);CHECK,N_GUARD::S(C),XS(e)
      • Refutation
        • K(a);S_FLIGHT,XS(C)
    • Try
      • Q(A);
      • Threat
        • QAB(A)+S(C),DCHECK
      • Vars
        • S(e);CHECK::QAB(A)+S(C),DCHECK,XS(e)
        • P(d);::QAB(A)+S(C),DCHECK,XP(d)
      • Refutation
        • Q(f);P_PINP(E),P_SPINQ(f),XS(C)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(e);CHECK,N_GUARD::S(C),XS(e)
        • Q(f);P_PINP(E),SBLOCK,XS(C)::QAR1(A)
        • Q(f);SBLOCK::S(D)
      • Refutation
        • Q(f);N_SPINS(c),XB(H)
  • Actual
    • Q(A);
    • Threat
      • S(C)
    • Vars
      • S(e);CHECK,N_GUARD::S(C),XS(e)
      • Q(f);N_GUARD,P_PINP(E),SBLOCK,XS(C)::QAR(A)
      • Q(f);SBLOCK::S(D)
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