MESON Chess Problem Database

Problem Display
PID: 143316 (2B1r3/5n2/4p2b/2pR4/1p2k1p1/R1n1P1B1/1N4KP/Q7 w - - 0 1)

White, Alain Campbell

British Chess Magazine, 1894

2B1r3/5n2/4p2b/2pR4/1p2k1p1/R1n1P1B1/1N4KP/Q7

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe3
      • 2.Qe1#
    • 1...Kxd5
      • 2.Bb7#
    • 1...Sxd5
      • 2.Qb1#
    • 1...Se5
      • 2.Rxe5#
    • 1...Sg5
      • 2.Re5#
    • 1...Sd6
      • 2.Re5#
    • 1...Sd8
      • 2.Re5#
    • 1...Sh8
      • 2.Re5#
  • Tries
    • 1.Qb1+?
      • 1...Kxe3
        • 2.Qd3#
        • 2.Qe1#
      • 1...Kxd5
        • 2.Bb7#
      • 1...Sxb1!
    • 1.Qd1?
      • threat
        • 2.Qd3#
      • 1...Kxe3
        • 2.Qe1#
        • 2.Qd3#
      • 1...Se5
        • 2.Rxe5#
      • 1...c4
        • 2.Qd4#
      • 1...Sxd1!
  • Keys
    • 1.Qh1!
      • threat
        • 2.Kf2#
      • 1...Kxe3
        • 2.Qe1#
      • 1...Kxd5
        • 2.Bb7#
      • 1...Bxe3
        • 2.Kf1#
      • 1...Sxd5
        • 2.Qb1#
      • 1...Se5
        • 2.Rxe5#
      • 1...Sd1
        • 2.Kf1#
        • 2.Kg1#
      • 1...Sg5
        • 2.Re5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • K(c);OGATEB,P-FLIGHT,P_SPINS(a),XP(F)::QAR2(A)
    • K(c);OGATEB,S_FLIGHT,XR(H)::B(I)
    • S(a);N_GUARD,SBLOCK,XR(H)::QAB(A)
    • S(h);N_GUARD::R1(H),XS(h)
    • S(h);N_GUARD::R1(H)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);S_FLIGHT,XR(H)::B(I)
      • Refutation
        • S(a);XQ(A)
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • S(h);N_GUARD::R1(H),XS(h)
        • P(e);N_GUARD::QAR1(A)
      • Refutation
        • S(a);XQ(A)
  • Actual
    • Q(A);
    • Threat
      • QAB(A)+K(C)
    • Vars
      • K(c);OGATEB,P-FLIGHT,P_SPINS(a),XP(F)::QAR2(A)
      • K(c);OGATEB,S_FLIGHT,XR(H)::B(I)
      • B(g);SBLOCK,XP(F)::QAB(A)+K(C)
      • S(a);N_GUARD,SBLOCK,XR(H)::QAB(A)
      • S(h);N_GUARD::R1(H),XS(h)
      • S(h);N_GUARD::R1(H)
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