MESON Chess Problem Database

Problem Display
PID: 50707 (3B4/4p3/1K2nNB1/4k2P/7P/3R1p2/1P1N1P2/2Q5 w - - 0 1)

Abbott, Joseph William

Chess Amateur (The), 1907

3B4/4p3/1K2nNB1/4k2P/7P/3R1p2/1P1N1P2/2Q5

#2

11 + 4

15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Sxf3#
      • 2.Sc4#
    • 1...exf6
      • 2.Sxf3#
      • 2.Sc4#
  • Tries
    • 1.Re3+?
      • 1...Kd4
        • 2.Sb3#
        • 2.Sxf3#
        • 2.Qc3#
        • 2.Qc4#
      • 1...Kf4
        • 2.Re4#
      • 1...Kd6
        • 2.Sc4#
        • 2.Qc6#
      • 1...Kxf6!
    • 1.Rd5+?
      • 1...Kf4
        • 2.Sb1#
        • 2.Sf1#
        • 2.Sb3#
        • 2.Sc4#
        • 2.Sde4#
        • 2.Rf5#
      • 1...Kxf6!
    • 1.Qe1+?
      • 1...Kf4
        • 2.Rxf3#
        • 2.Qe3#
        • 2.Qe4#
      • 1...Kxf6!
    • 1.Qc3+?
      • 1...Kf4
        • 2.Rxf3#
      • 1...Sd4!
  • Keys
    • 1.Rd6!
      • 1...Kf4
        • 2.Sc4#
      • 1...Kxd6
        • 2.Sc4#
      • 1...Kxf6
        • 2.Qc3#
      • 1...Sxd8
        • 2.Sc4#
      • 1...exd6
        • 2.Sxf3#
      • 1...exf6
        • 2.Sc4#
      • 1...Sd4
        • 2.Sc4#
      • 1...Sf4
        • 2.Sc4#
      • 1...Sc5
        • 2.Sc4#
      • 1...Sg5
        • 2.Sc4#
      • 1...Sc7
        • 2.Sc4#
      • 1...Sg7
        • 2.Sc4#
      • 1...Sf8
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 13
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(E);CHECK
      • Vars
        • K(b);S_FLIGHT::R1(E)
      • Refutation
        • K(b);P_SPINP(d),S_FLIGHT,XS(I)
    • Try
      • R(E);CHECK
      • Refutation
        • K(b);P_SPINP(d),S_FLIGHT,XS(I)
    • Try
      • Q(A);CHECK
      • Refutation
        • K(b);P_SPINP(d),S_FLIGHT,XS(I)
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT::R1(E),XP(a)
      • Refutation
        • S(c);P_SPINS(c)
  • Actual
    • R(E);
    • Vars
      • K(b);S_FLIGHT::QAB(A)+S(C)
      • K(b);S_FLIGHT,XR(E)::S(C)
      • K(b);P_SPINP(d),P_SPINS(c),S_FLIGHT,XS(I)::QAB(A)
      • S(c);XB(K)::S(C)
      • P(d);SBLOCK,XR(E)::S(C),XP(a)
      • P(d);XS(I)::S(C)
      • S(c);::S(C)
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