MESON Chess Problem Database

Problem Display
PID: 9342 (6NN/B1R5/4p3/3rkB2/4n2K/2PQ4/8/8 w - - 0 1)

Bettmann, Edgar

Bettmann, Henry Wald

International Chess Magazine, 1885

6NN/B1R5/4p3/3rkB2/4n2K/2PQ4/8/8

#2

8 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Qxe4#
    • 1...Rd6
      • 2.Qxe4#
    • 1...Sd6
      • 2.Sg6#
  • Tries
    • 1.Sf7+?
      • 1...Kf4
        • 2.Qxe4#
      • 1...Kxf5!
  • Keys
    • 1.Bb8!
      • 1...Kf4
        • 2.Qxe4#
      • 1...Kxf5
        • 2.Rf7#
      • 1...Kd6
        • 2.Sf7#
      • 1...Rxd3
        • 2.Rc5#
      • 1...Sxc3
        • 2.Rc5#
      • 1...exf5
        • 2.Re7#
      • 1...Rd4
        • 2.Rc5#
      • 1...Ra5
        • 2.Rc5#
      • 1...Rb5
        • 2.Rc5#
      • 1...Rc5
        • 2.Rxc5#
      • 1...Rd6
        • 2.Qxe4#
      • 1...Rd7
        • 2.Rc5#
      • 1...Rd8
        • 2.Rc5#
      • 1...Sd2
        • 2.Rc5#
      • 1...Sf2
        • 2.Rc5#
      • 1...Sg3
        • 2.Rc5#
      • 1...Sc5
        • 2.Rxc5#
      • 1...Sg5
        • 2.Rc5#
      • 1...Sd6
        • 2.Sg6#
      • 1...Sf6
        • 2.Rc5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 17
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::QAR1(B),XS(a)
    • R(b);SBLOCK::QAR1(B),XS(a)
    • S(a);SBLOCK::S(H)
  • Tries
    • Try
      • S(H);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR1(B),XS(a)
      • Refutation
        • K(c);P-FLIGHT,P_SPINS(a),XB(D)
  • Actual
    • B(E);
    • Vars
      • K(c);S_FLIGHT::QAR1(B),XS(a)
      • K(c);P-FLIGHT,P_SPINS(a),XB(D)::R(F)
      • K(c);P_SPINR(b),S_FLIGHT::S(H)
      • R(b);XQ(B)::B(E)+R(F),DCHECK
      • S(a);N_GUARD,XP(A)::B(E)+R(F)
      • P(d);SBLOCK,XB(D)::B(E)+R(F),DCHECK
      • R(b);::B(E)+R(F),DCHECK
      • R(b);::B(E)+R(F),DCHECK,XR(b)
      • R(b);SBLOCK::QAR1(B),XS(a)
      • S(a);N_GUARD::B(E)+R(F)
      • S(a);N_GUARD::B(E)+R(F),XS(a)
      • S(a);SBLOCK::S(H)
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