MESON Chess Problem Database

Problem Display
PID: 175051 (8/4ppQ1/3P1P1p/1K1k3N/6B1/4P3/1BP5/3N4 w - - 0 1)

Gamage, Frederick

Boston Sunday Post, 1901

8/4ppQ1/3P1P1p/1K1k3N/6B1/4P3/1BP5/3N4

#2

10 + 4

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Sf4+?
      • 1...Ke4
        • 2.Qh7#
      • 1...Kxd6!
    • 1.Qg5+?
      • 1...Ke4
        • 2.Sf2#
        • 2.Sc3#
        • 2.Sg3#
        • 2.Qe5#
        • 2.Qf5#
      • 1...Kxd6
        • 2.Qc5#
        • 2.Qe5#
      • 1...e5
        • 2.Qxe5#
      • 1...hxg5!
    • 1.Qxf7+?
      • 1...Ke4
        • 2.Sg3#
        • 2.Qc4#
        • 2.Qe6#
      • 1...e6
        • 2.Qxe6#
      • 1...Kxd6!
    • 1.c4+?
      • 1...Ke4
        • 2.Qh7#
      • 1...Kxd6!
    • 1.fxe7?
      • threat
        • 2.Qd4#
        • 2.Qe5#
      • 1...Ke4
        • 2.Sf6#
        • 2.Qd4#
        • 2.Qe5#
      • 1...Kxd6
        • 2.Qe5#
      • 1...f5
        • 2.Qe5#
      • 1...f6!
  • Keys
    • 1.Qf8!
      • 1...Ke4
        • 2.Qa8#
      • 1...Kxd6
        • 2.Qd8#
      • 1...exd6
        • 2.Qa8#
      • 1...exf6
        • 2.Sxf6#
      • 1...e5
        • 2.Sc3#
      • 1...e6
        • 2.Bf3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB(J)
      • Refutation
        • K(a);P-FLIGHT,XP(H)
    • Try
      • Q(J);CHECK
      • Vars
        • P(c);P_SPINP(c)::QAR1(J),XP(c)
      • Refutation
        • P(b);XQ(J)
    • Try
      • Q(J);CHECK,XP(d)
      • Vars
        • P(c);P_SPINP(c)::QAB1(J),XP(c)
      • Refutation
        • K(a);P-FLIGHT,XP(H)
    • Try
      • P(C);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB(J)
      • Refutation
        • K(a);P-FLIGHT,XP(H)
    • Try
      • P(I);XP(c)
      • Threat
        • DUALS(2)
      • Vars
        • K(a);P-FLIGHT,XP(H)::QAB1(J)
        • P(d);::QAR1(J)
      • Refutation
        • P(d);
  • Actual
    • Q(J);
    • Vars
      • K(a);S_FLIGHT::QAB(J)
      • K(a);OGATEB,P-FLIGHT,P_SPINP(c),XP(H)::QAR2(J)
      • P(c);SBLOCK,XP(H)::QAB(J)
      • P(c);XP(I)::S(G),XP(c)
      • P(c);SBLOCK::S(A)
      • P(c);SBLOCK::B(E)
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