MESON Chess Problem Database

Problem Display
PID: 26811 (2Q2B2/1N1p4/1p2b1R1/Pp1k4/3P4/5N2/K1B4b/2R5 w - - 0 1)

Bruch, Wieland

4th Prize, Die Schwalbe, 2001

2Q2B2/1N1p4/1p2b1R1/Pp1k4/3P4/5N2/K1B4b/2R5

#2

10 + 6

23 Die Schwalbe 2004

SOLUTION

  • SOUND
  • Sets
    • 1...bxa5
      • 2.Qc5#
  • Tries
    • 1.Sc5?
      • threat
        • 2.Bb3#
        • 2.Be4#
      • 1...bxc5
        • 2.Qxc5#
      • 1...Bc7
        • 2.Be4#
      • 1...Bf5
        • 2.Bb3#
      • 1...Kc4!
    • 1.Sd6?
      • threat
        • 2.Bb3#
        • 2.Be4#
        • 2.Qb7#
        • 2.Qa8#
      • 1...Bf5
        • 2.Bb3#
        • 2.Qb7#
        • 2.Qa8#
      • 1...Bxd6!
    • 1.Re1?
      • threat
        • 2.Bb3#
        • 2.Be4#
      • 1...Bf5
        • 2.Bb3#
      • 1...Bc7!
    • 1.Rg5+?
      • 1...Be5
        • 2.Rxe5#
      • 1...Bf5!
    • 1.Qc4+?
      • 1...Kxc4
        • 2.Be4#
      • 1...bxc4!
  • Keys
    • 1.Qa8!
      • threat
        • 2.Sd6#
      • 1...Kc6+
        • 2.Bb3#
      • 1...Kc4
        • 2.Be4#
      • 1...Bd6
        • 2.Sxd6#
      • 1...d6
        • 2.Sxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • P(d);N_GUARD,XP(F)::QAR1(I)
  • Tries
    • Try
      • S(H);
      • Threat
        • DUALS(2)
      • Vars
        • P(d);OGATE,XS(H)::QAR1(I),XP(d)
        • B(a);::B(C)
        • B(e);::B(C)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(H);
      • Threat
        • DUALS(4)
      • Refutation
        • B(a);XS(H)
    • Try
      • R(A);
      • Threat
        • DUALS(2)
      • Vars
        • B(e);::B(C)
      • Refutation
        • B(a);
    • Try
      • R(G);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::R1(G),XB(a)
      • Refutation
        • B(e);P_SPINB(e)
    • Try
      • Q(I);CHECK
      • Vars
        • K(c);S_FLIGHT,XQ(I)::R(A)+B(C)
      • Refutation
        • P(b);XQ(I)
  • Actual
    • Q(I);
    • Threat
      • QAB(I)+S(H)
    • Vars
      • K(c);CHECK,P_SPINB(e),S_FLIGHT::R(A)+B(C)
      • K(c);S_FLIGHT::R(A)+B(C)
      • B(a);::QAB(I)+S(H),XB(a)
      • P(f);::QAB(I)+S(H),XP(f)
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