MESON Chess Problem Database

Problem Display
PID: 199408 (1K6/1p3B2/8/2p1B1pp/Q2bk2n/3pNp1P/2b2p2/5N2 w - - 0 1)

van der Werf, JD

Op de Hoogte, 1901

1K6/1p3B2/8/2p1B1pp/Q2bk2n/3pNp1P/2b2p2/5N2

#2

7 + 11

657 The Times 1909

SOLUTION

  • SOUND
  • Tries
    • 1.Sg4?
      • threat
        • 2.Sg3#
      • 1...Kf5
        • 2.Sg3#
      • 1...d2
        • 2.Qxc2#
      • 1...Sf5
        • 2.Sd2#
      • 1...hxg4!
    • 1.Bh2?
      • threat
        • 2.Bd5#
      • 1...d2
        • 2.Qxc2#
      • 1...Bb3!
    • 1.Bg3?
      • threat
        • 2.Bd5#
      • 1...d2
        • 2.Qxc2#
      • 1...Bb3!
    • 1.Bd6?
      • threat
        • 2.Bd5#
      • 1...d2
        • 2.Qxc2#
      • 1...Bb3!
    • 1.Bc7?
      • threat
        • 2.Bd5#
      • 1...d2
        • 2.Qxc2#
      • 1...Bb3!
  • Keys
    • 1.Sc4!
      • threat
        • 2.Sg3#
      • 1...Bxe5+
        • 2.Sd6#
      • 1...Kf5
        • 2.Sg3#
      • 1...d2
        • 2.Qxc2#
      • 1...Sf5
        • 2.Sfd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Threat
        • S(A)
      • Vars
        • K(f);N_SPINB(e),S_FLIGHT::S(A)
        • P(c);OGATEB::QAB(D),XB(a)
        • S(g);SBLOCK::S(A)
      • Refutation
        • P(j);XS(B)
    • Try
      • B(E);
      • Threat
        • B(F)
      • Vars
        • P(c);OGATEB::QAB(D),XB(a)
      • Refutation
        • B(a);
    • Try
      • B(E);
      • Threat
        • B(F)
      • Vars
        • P(c);OGATEB::QAB(D),XB(a)
      • Refutation
        • B(a);
    • Try
      • B(E);
      • Threat
        • B(F)
      • Vars
        • P(c);OGATEB::QAB(D),XB(a)
      • Refutation
        • B(a);
    • Try
      • B(E);
      • Threat
        • B(F)
      • Vars
        • P(c);OGATEB::QAB(D),XB(a)
      • Refutation
        • B(a);
  • Actual
    • S(B);N_PINB(e)
    • Threat
      • S(A)
    • Vars
      • B(e);CHECK,SBLOCK,XB(E)::QAR(D)+S(B),DCHECK
      • K(f);S_FLIGHT::S(A)
      • P(c);OGATEB::QAB(D),XB(a)
      • S(g);SBLOCK::S(A)
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