MESON Chess Problem Database

Problem Display
PID: 160204 (2n4K/p5R1/8/2b1kN1N/2Q3B1/r7/8/7b w - - 0 1)

Dobbs, Gilbert S

2nd Prize, British Chess Magazine 13. Ty., 1906-1907

2n4K/p5R1/8/2b1kN1N/2Q3B1/r7/8/7b

#2

6 + 6

15 British Chess Magazine 1908

SOLUTION

  • SOUND
  • Sets
    • 1...Sd6
      • 2.Re7#
  • Tries
    • 1.Sh6?
      • threat
        • 2.Sf7#
      • 1...Kd6
        • 2.Qe6#
      • 1...Bd4
        • 2.Qe6#
      • 1...Bd5
        • 2.Qf4#
      • 1...Sd6
        • 2.Re7#
      • 1...Rf3!
    • 1.Rg6?
      • threat
        • 2.Re6#
        • 2.Qe6#
      • 1...Bd5
        • 2.Qf4#
      • 1...Ra6!
    • 1.Qd4+?
      • 1...Ke6
        • 2.Se3#
        • 2.Sfg3#
        • 2.Sh4#
        • 2.Sd6#
        • 2.Sh6#
        • 2.Se7#
        • 2.Sf4#
      • 1...Bxd4!
    • 1.Qf4+?
      • 1...Ke6
        • 2.Se3#
        • 2.Se7#
      • 1...Kd5!
    • 1.Qxc5+?
      • 1...Ke4
        • 2.Qd4#
      • 1...Ke6
        • 2.Se3#
        • 2.Sfg3#
        • 2.Sd4#
        • 2.Sh4#
        • 2.Sd6#
        • 2.Sh6#
        • 2.Se7#
      • 1...Bd5!
  • Keys
    • 1.Sd6!
      • threat
        • 2.Sf7#
      • 1...Kxd6
        • 2.Qe6#
      • 1...Bxd6
        • 2.Rg5#
      • 1...Sxd6
        • 2.Re7#
      • 1...Rf3
        • 2.Qxc5#
      • 1...Bd5
        • 2.Qf4#
      • 1...Bd4
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • S(f);N_GUARD,S_CUTB(c)::R(E)
  • Tries
    • Try
      • S(C);
      • Threat
        • S(C)
      • Vars
        • K(d);S_FLIGHT::QAR1(A)
        • B(c);SBLOCK::QAR1(A)
        • B(a);SBLOCK::QAB1(A)
        • S(f);N_GUARD,SBLOCK,S_CUTB(c)::R(E)
      • Refutation
        • R(b);
    • Try
      • R(E);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);SBLOCK::QAB1(A)
      • Refutation
        • R(b);
    • Try
      • Q(A);CHECK
      • Refutation
        • B(c);XQ(A)
    • Try
      • Q(A);CHECK
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • Q(A);CHECK,XB(c)
      • Vars
        • K(d);P-FLIGHT::QAR1(A)
      • Refutation
        • B(a);P_SPINB(a)
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • K(d);S_FLIGHT,XS(C)::QAR1(A)
      • B(c);SBLOCK,XS(C)::R(E)
      • S(f);N_GUARD,SBLOCK,XS(C)::R(E)
      • R(b);S_CUTB(a)::QAR2(A),XB(c)
      • B(a);SBLOCK::QAB1(A)
      • B(c);SBLOCK::QAR1(A)
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