MESON Chess Problem Database

Problem Display
PID: 68155 (3RK3/N1pN1P1b/8/3PQ3/1pk2q1R/1rn2p2/2Pnr3/B4B2 w - - 0 1)

Gamage, Frederick

HM., Los Angeles Chess Club, 1940

3RK3/N1pN1P1b/8/3PQ3/1pk2q1R/1rn2p2/2Pnr3/B4B2

#2

11 + 10

5397 Frederick Gamage (Prcic) 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Qd4
      • 2.Rxd4#
    • 1...Se4
      • 2.Qd4#
    • 1...c5
      • 2.Sb6#
  • Tries
    • 1.Sb6+?
      • 1...cxb6
        • 2.Rc8#
      • 1...Kc5!
  • Keys
    • 1.Qe3!
      • threat
        • 2.Se5#
      • 1...Kxd5
        • 2.Sb6#
      • 1...Qd4
        • 2.Rxd4#
      • 1...Be4
        • 2.Qc5#
      • 1...Sde4
        • 2.Qd3#
      • 1...Sce4
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • Q(h);OGATE::R1(D),XQ(h)
    • S(d);N_PINQ(F),N_SPINQ(h)::QAR1(F)
    • P(i);N_GUARD,SBLOCK::S(H)
  • Tries
    • Try
      • S(H);CHECK
      • Vars
        • P(i);XS(H)::R(J)
      • Refutation
        • K(g);N_SPINQ(h),N_SPINR(b),P-FLIGHT
  • Actual
    • Q(F);
    • Threat
      • S(H)
    • Vars
      • K(g);N_SPINQ(h),N_SPINR(b),S_FLIGHT,XP(E)::R(J)+S(H),DCHECK
      • Q(h);OGATE::R1(D),XQ(h)
      • B(j);N_PINQ(F),N_SPINQ(h)::QAR1(F)
      • S(a);N_PINQ(F),N_SPINQ(h)::QAB1(F)
      • S(d);N_PINQ(F),N_SPINQ(h)::QAR1(F)
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