MESON Chess Problem Database

Problem Display
PID: 154877 (K7/8/1P1p1Q2/1Rnk1N2/3b3p/7B/1P4P1/3R4 w - - 0 1)

Dobbs, Gilbert S

St. Paul's Dispatch, 1909

K7/8/1P1p1Q2/1Rnk1N2/3b3p/7B/1P4P1/3R4

#2

9 + 5

119 Tidskrift for Schack 1909

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Rxd4#
      • 2.Qxd4#
  • Tries
    • 1.Se3+?
      • 1...Ke4
        • 2.Qxd4#
      • 1...Kc6!
    • 1.Se7+?
      • 1...Ke4
        • 2.Qxd4#
      • 1...Kc4!
    • 1.Ra5?
      • 1...Ke4
        • 2.Rxd4#
        • 2.Qxd4#
      • 1...Kc6
        • 2.Qxd6#
      • 1...Kc4!
    • 1.Qxd6+?
      • 1...Ke4
        • 2.Rxd4#
        • 2.Qxd4#
      • 1...Kc4!
    • 1.Qe6+?
      • 1...Kc6
        • 2.Sxd4#
      • 1...Kxe6!
    • 1.b3?
      • 1...Ke4
        • 2.Rxd4#
        • 2.Qxd4#
      • 1...Kc6!
  • Keys
    • 1.Qg5!
      • 1...Kc4
        • 2.Sxd6#
      • 1...Ke4
        • 2.Sxd6#
      • 1...Ke5
        • 2.Sg3#
      • 1...Kc6
        • 2.Sxd4#
      • 1...Ke6
        • 2.Sh6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(d);N_SPINB(a),N_SPINS(c),S_FLIGHT::QAR1(H),XB(a)
      • Refutation
        • K(d);N_SPINB(a),N_SPINS(c),P_SPINP(e),S_FLIGHT
    • Try
      • S(F);CHECK
      • Vars
        • K(d);N_SPINB(a),N_SPINS(c),S_FLIGHT::QAR1(H),XB(a)
      • Refutation
        • K(d);N_SPINB(a),N_SPINS(c),S_FLIGHT
    • Try
      • R(E);
      • Vars
        • K(d);N_SPINB(a),N_SPINS(c),P_SPINP(e),S_FLIGHT::QAR1(H),XP(e)
      • Refutation
        • K(d);N_SPINB(a),N_SPINS(c),S_FLIGHT
    • Try
      • Q(H);CHECK,XP(e)
      • Refutation
        • K(d);N_SPINB(a),N_SPINS(c),S_FLIGHT
    • Try
      • Q(H);CHECK
      • Vars
        • K(d);N_SPINB(a),N_SPINS(c),P_SPINP(e),S_FLIGHT::S(F),XB(a)
      • Refutation
        • K(d);N_SPINB(a),N_SPINS(c),S_FLIGHT,XQ(H)
    • Try
      • P(B);
      • Refutation
        • K(d);N_SPINB(a),N_SPINS(c),P_SPINP(e),S_FLIGHT
  • Actual
    • Q(H);
    • Vars
      • K(d);N_SPINB(a),N_SPINS(c),S_FLIGHT::S(F),XP(e)
      • K(d);N_SPINB(a),P-FLIGHT::QAR(H)+S(F)
      • K(d);N_SPINB(a),N_SPINS(c),S_FLIGHT::S(F),XB(a)
      • K(d);N_SPINB(a),N_SPINS(c),S_FLIGHT::B(D)+S(F)
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