MESON Chess Problem Database

Problem Display
PID: 121725 (4Kn2/8/5BRb/5k2/4pp1P/1Q6/2P5/2q5 w - - 0 1)

Stubbs, Charles Francis

Checkmate, 1901

4Kn2/8/5BRb/5k2/4pp1P/1Q6/2P5/2q5

#2

6 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Bb2?
      • threat
        • 2.Qf7#
      • 1...Kxg6
        • 2.Qf7#
      • 1...Sxg6
        • 2.Qh3#
      • 1...Bg5
        • 2.Rxg5#
      • 1...e3
        • 2.Qd3#
      • 1...Bg7
        • 2.Rg5#
      • 1...Se6
        • 2.Qxe6#
      • 1...Sd7
        • 2.Qe6#
      • 1...Sh7
        • 2.Qe6#
      • 1...Qxb2!
    • 1.Rg5+?
      • 1...Kxf6
        • 2.Qf7#
      • 1...Bxg5!
    • 1.Qb5+?
      • 1...Ke6
        • 2.Qe5#
      • 1...Kxg6!
  • Keys
    • 1.Bd4!
      • threat
        • 2.Qf7#
      • 1...Kxg6
        • 2.Qf7#
      • 1...Sxg6
        • 2.Qh3#
      • 1...Bg5
        • 2.Rxg5#
      • 1...e3
        • 2.Qd3#
      • 1...Bg7
        • 2.Rg5#
      • 1...Se6
        • 2.Qxe6#
      • 1...Sd7
        • 2.Qe6#
      • 1...Sh7
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(D);
      • Threat
        • QAR2(B)
      • Vars
        • K(d);S_FLIGHT,XR(E)::QAB1(B)
        • S(f);SBLOCK,XR(E)::QAB(B)
        • B(e);N_GUARD::R1(E),XB(e)
        • P(b);OGATEB::QAB(B)
        • B(e);N_GUARD::R1(E)
        • S(f);N_GUARD::QAB1(B),XS(f)
        • S(f);N_GUARD::QAB1(B)
      • Refutation
        • Q(a);XB(D)
    • Try
      • R(E);CHECK
      • Vars
        • K(d);P-FLIGHT,XB(D)::QAR1(B)
      • Refutation
        • B(e);XR(E)
    • Try
      • Q(B);CHECK
      • Vars
        • K(d);S_FLIGHT::QAR1(B)
      • Refutation
        • K(d);S_FLIGHT,XR(E)
  • Actual
    • B(D);
    • Threat
      • QAR2(B)
    • Vars
      • K(d);S_FLIGHT,XR(E)::QAB1(B)
      • S(f);SBLOCK,XR(E)::QAB(B)
      • B(e);N_GUARD::R1(E),XB(e)
      • P(b);OGATEB::QAB(B)
      • B(e);N_GUARD::R1(E)
      • S(f);N_GUARD::QAB1(B),XS(f)
      • S(f);N_GUARD::QAB1(B)
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