MESON Chess Problem Database

Problem Display
PID: 54853 (rb2nqB1/1r4p1/5p2/4QP2/1k1P4/1NN3R1/1PP4K/8 w - - 0 1)

Gamage, Frederick

Tidskrift for Schack, 1914

rb2nqB1/1r4p1/5p2/4QP2/1k1P4/1NN3R1/1PP4K/8

#2

10 + 8

5397 Frederick Gamage (Prcic) 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Qc5
      • 2.Qxc5#
    • 1...Qf7
      • 2.Qc5#
    • 1...Qxg8
      • 2.Qc5#
    • 1...Rb5
      • 2.Qxb5#
    • 1...Rba7
      • 2.Qb5#
    • 1...Rc7
      • 2.Qb5#
    • 1...Rd7
      • 2.Qb5#
    • 1...Re7
      • 2.Qb5#
      • 2.Qc5#
    • 1...Rf7
      • 2.Qb5#
    • 1...Ra5
      • 2.Qxa5#
    • 1...Ba7
      • 2.Qa5#
    • 1...Sd6
      • 2.Qc5#
  • Tries
    • 1.Qd5?
      • threat
        • 2.Qc4#
        • 2.Qxb7#
      • 1...Qxg8
        • 2.Qc5#
      • 1...Qc5
        • 2.Qxc5#
      • 1...Qd6
        • 2.Qc4#
      • 1...Qe7
        • 2.Qc4#
      • 1...Qf7
        • 2.Qc5#
      • 1...Rb5
        • 2.Qc4#
        • 2.Qxb5#
      • 1...Rb6
        • 2.Qc4#
      • 1...Rba7
        • 2.Qc4#
        • 2.Qb5#
      • 1...Rc7
        • 2.Qb5#
      • 1...Rd7
        • 2.Qc4#
        • 2.Qb5#
      • 1...Re7
        • 2.Qc4#
        • 2.Qb5#
        • 2.Qc5#
      • 1...Rf7
        • 2.Qb5#
      • 1...Ra5
        • 2.Qc4#
        • 2.Qxa5#
      • 1...Ra6
        • 2.Qc4#
      • 1...Raa7
        • 2.Qc4#
      • 1...Ba7
        • 2.Qc4#
        • 2.Qa5#
      • 1...Bc7
        • 2.Qc4#
      • 1...Sd6
        • 2.Qc5#
      • 1...Sc7
        • 2.Qc4#
      • 1...Bxg3+!
  • Keys
    • 1.Rg4!
      • threat
        • 2.d5#
      • 1...Bxe5+
        • 2.dxe5#
      • 1...fxe5
        • 2.dxe5#
      • 1...Qc5
        • 2.dxc5#
      • 1...Rc7
        • 2.Qb5#
      • 1...Ba7
        • 2.Qa5#
      • 1...Sd6
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • Q(h);N_GUARD::QAB1(H),XQ(h)
    • Q(h);N_GUARD::QAB1(H)
    • Q(h);N_GUARD,XB(J)::QAB1(H)
    • R(c);N_GUARD::QAR1(H),XR(c)
    • R(c);N_GUARD::QAR1(H)
    • R(e);N_GUARD::QAB1(H),XR(e)
    • B(f);S_CUTR(e)::QAB1(H)
    • S(g);S_CUTQ(h)::QAB1(H)
  • Tries
    • Try
      • Q(H);P_SPINR(F)
      • Threat
        • DUALS(2)
      • Vars
        • Q(h);N_GUARD,XB(J)::QAB1(H)
        • Q(h);N_GUARD::QAB1(H),XQ(h)
        • Q(h);::QAR1(H)
        • Q(h);N_GUARD::QAB1(H)
        • R(c);::QAR1(H)
        • R(c);N_GUARD,N_PINR(F)::QAR1(H)
        • R(c);N_GUARD::QAR1(H)
        • R(e);::QAR1(H)
        • B(f);::QAR1(H)
        • S(g);N_PINR(F),S_CUTQ(h)::QAB1(H)
        • S(g);N_PINR(F)::QAR1(H)
      • Refutation
        • B(f);CHECK,XR(F)
  • Actual
    • R(F);P_SPINQ(H)
    • Threat
      • R(F)+P(G)
    • Vars
      • B(f);CHECK,OGATE,XQ(H)::R(F)+P(G),XB(f)
      • P(b);OGATE,XQ(H)::R(F)+P(G),XP(b)
      • Q(h);OGATE::R(F)+P(G),XQ(h)
      • R(c);N_PINQ(H)::QAR1(H)
      • B(f);N_PINQ(H)::QAB1(H)
      • S(g);N_PINQ(H)::QAB1(H)
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