MESON Chess Problem Database

Problem Display
PID: 182348 (4b3/7q/4R3/7p/4p2Q/4N3/1N2kP2/1K2B1R1 w - - 0 1)

Gamage, Frederick

American Chess Bulletin, 1906

4b3/7q/4R3/7p/4p2Q/4N3/1N2kP2/1K2B1R1

#2

8 + 5

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Sc2?
      • threat
        • 2.Sd4#
      • 1...Kf3
        • 2.Sd4#
      • 1...Qd7
        • 2.Qxe4#
      • 1...Qg7
        • 2.Qxe4#
      • 1...Qh8
        • 2.Qxe4#
      • 1...e3
        • 2.Rxe3#
      • 1...Qa7!
    • 1.f3?
      • threat
        • 2.Qf2#
      • 1...exf3+
        • 2.Sf5#
      • 1...Kxf3
        • 2.Qf2#
      • 1...Kxe3!
  • Keys
    • 1.f4!
      • threat
        • 2.Qf2#
      • 1...exf4 ep+
        • 2.Sf5#
      • 1...Kxe3
        • 2.Qf2#
      • 1...Kf3
        • 2.Qf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);P_PINP(b)
      • Threat
        • S(F)
      • Vars
        • K(a);N_SPINP(b),S_FLIGHT::S(F)
        • Q(d);N_GUARD::QAR2(G),XP(b)
        • P(b);OGATE,P_PINS(F)::R1(H),XP(b)
      • Refutation
        • Q(d);
    • Try
      • P(E);
      • Threat
        • QAR1(G)
      • Vars
        • P(b);CHECK,SBLOCK,XP(E)::R(H)+S(F)
        • K(a);S_FLIGHT,XP(E)::QAR1(G)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b),XS(F)
  • Actual
    • P(E);
    • Threat
      • QAR1(G)
    • Vars
      • P(b);CHECK,EP,XP(E)::R(H)+S(F)
      • K(a);P-FLIGHT,P_SPINP(b),XS(F)::QAB1(G)
      • K(a);S_FLIGHT::QAR1(G)
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