MESON Chess Problem Database

Problem Display
PID: 60738 (Rb1B4/2pkP3/4N3/PN3K2/B7/7Q/8/8 w - - 0 1)

Stubbs, Arthur Goodwin

Good Companions (November), 1918

Rb1B4/2pkP3/4N3/PN3K2/B7/7Q/8/8

#2

9 + 3

3132 The Good Companion Two-Mover 1922
81 Chess 1950

SOLUTION

  • SOUND
  • Sets
    • 1...Ke8
      • 2.Sd6#
  • Tries
    • 1.Sd6+?
      • 1...Kxd6
        • 2.Qd3#
      • 1...c6!
    • 1.Sa7+?
      • 1...Kd6
        • 2.Qd3#
      • 1...c6!
    • 1.Sbxc7+?
      • 1...Kd6
        • 2.Ra6#
        • 2.Qh2#
        • 2.Qa3#
        • 2.Qd3#
        • 2.Qg3#
        • 2.e8S#
      • 1...Kc8!
    • 1.Sc5+?
      • 1...Kc8
        • 2.Ke4#
        • 2.Kf4#
        • 2.Ke5#
        • 2.Kg5#
        • 2.Kf6#
        • 2.Kg6#
        • 2.Sa7#
      • 1...Ke8
        • 2.Sd6#
        • 2.Qh5#
      • 1...Kc6!
    • 1.Qd3+?
      • 1...Kc6
        • 2.Sd6#
      • 1...Ke8
        • 2.Sd6#
      • 1...Kc8!
    • 1.e8Q+?
      • 1...Kxe8
        • 2.Sd6#
      • 1...Kc8!
    • 1.e8B+?
      • 1...Kxe8
        • 2.Sd6#
      • 1...Kc8!
  • Keys
    • 1.Ke5!
      • 1...c5+
        • 2.Sd6#
      • 1...c6+
        • 2.Sec7#
      • 1...Kc6
        • 2.Sd6#
      • 1...Kc8
        • 2.Sc5#
      • 1...Ke8
        • 2.Sd6#
      • 1...Ba7
        • 2.Sbxc7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::B(B)+S(D),DCHECK
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(b);P-FLIGHT,XS(D)::QAR(A)
      • Refutation
        • P(a);P_SPINP(a)
    • Try
      • S(D);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR(A)
      • Refutation
        • P(a);P_SPINP(a)
    • Try
      • S(D);CHECK,XP(a)
      • Refutation
        • K(b);P_SPINB(c),S_FLIGHT
    • Try
      • S(F);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT::B(B)+S(D)
        • K(b);S_FLIGHT::B(B)+S(D),DCHECK
      • Refutation
        • K(b);P_SPINB(c),S_FLIGHT
    • Try
      • P(G);CHECK
      • Vars
        • K(b);S_FLIGHT,XQ(G)::B(B)+S(D),DCHECK
      • Refutation
        • K(b);P_SPINB(c),S_FLIGHT
    • Try
      • P(G);CHECK
      • Vars
        • K(b);S_FLIGHT,XB(G)::B(B)+S(D),DCHECK
      • Refutation
        • K(b);P_SPINB(c),S_FLIGHT
  • Actual
    • K(E);P-FLIGHT
    • Vars
      • P(a);CHECK,N_GUARD::B(B)+S(D)
      • P(a);CHECK,SBLOCK::QAB(A)+S(F)
      • K(b);S_FLIGHT::B(B)+S(D)
      • K(b);P_SPINB(c),S_FLIGHT::QAB(A)+S(F)
      • K(b);S_FLIGHT::B(B)+S(D),DCHECK
      • B(c);::B(B)+S(D),XP(a)
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