MESON Chess Problem Database

Problem Display
PID: 56892 (b5Q1/7B/1N5n/4pn2/2p1k3/3N3R/K2pP1p1/b5r1 w - - 0 1)

Driver, John Edward

4th Prize, BCF 110. Ty., 1965-1966

b5Q1/7B/1N5n/4pn2/2p1k3/3N3R/K2pP1p1/b5r1

#2

7 + 10

3772 FIDE Album (1965-1967) 1976

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qxc4#
    • 1...Bd4
      • 2.Qxa8#
    • 1...Bd5
      • 2.Qxd5#
    • 1...Sg4
      • 2.Qxg4#
    • 1...Sf7
      • 2.Qg4#
    • 1...c3
      • 2.Qc4#
  • Tries
    • 1.Sf2+?
      • 1...Kd4
        • 2.Qxc4#
      • 1...Kf4!
    • 1.Sc5+?
      • 1...Kd4
        • 2.Qxc4#
      • 1...Kf4!
    • 1.Bxf5+?
      • 1...Kd4
        • 2.Qxc4#
      • 1...Sxf5
        • 2.Qg4#
      • 1...Kxf5!
    • 1.Qg3?
      • threat
        • 2.Qe3#
      • 1...Kd4
        • 2.Qxe5#
      • 1...Bd4
        • 2.Qf3#
      • 1...Sg4
        • 2.Qxg4#
      • 1...d1S!
  • Keys
    • 1.e3!
      • threat
        • 2.Sf2#
        • 2.Sc5#
      • 1...Kxd3
        • 2.Qxc4#
      • 1...cxd3
        • 2.Qxa8#
      • 1...d1S
        • 2.Sc5#
      • 1...Rf1
        • 2.Sc5#
      • 1...Bd4
        • 2.Sf2#
      • 1...Sg4
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • K(f);N_SPINS(h),P-FLIGHT::QAR1(G),XP(e)
    • B(a);SBLOCK::QAB(G),XB(j)
    • B(j);N_GUARD::QAB1(G),XB(j)
    • S(i);N_GUARD::QAR2(G),XS(i)
    • S(i);N_GUARD::QAR2(G)
    • P(e);S_CUTB(a)::QAR2(G)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(f);N_SPINS(h),P-FLIGHT::QAR1(G),XP(e)
      • Refutation
        • K(f);N_SPINS(h),P-FLIGHT
    • Try
      • S(C);CHECK
      • Vars
        • K(f);N_SPINS(h),P-FLIGHT::QAR1(G),XP(e)
      • Refutation
        • K(f);N_SPINS(h),P-FLIGHT
    • Try
      • B(F);CHECK,XS(h)
      • Vars
        • K(f);P-FLIGHT::QAR1(G),XP(e)
        • S(i);XB(F)::QAR2(G)
      • Refutation
        • K(f);S_FLIGHT,XB(F)
    • Try
      • Q(G);
      • Threat
        • QAR1(G)
      • Vars
        • K(f);N_SPINS(h),P-FLIGHT::QAB1(G),XP(g)
        • B(a);SBLOCK::QAB1(G)
        • S(i);N_GUARD::QAR2(G),XS(i)
      • Refutation
        • P(c);
  • Actual
    • P(B);
    • Threat
      • DUALS(2)
    • Vars
      • K(f);S_FLIGHT,XS(C)::QAB1(G),XP(e)
      • P(e);SBLOCK,XS(C)::QAB(G),XB(j)
      • P(c);::S(C)
      • R(b);::S(C)
      • B(a);::S(C)
      • S(i);::S(C)
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