MESON Chess Problem Database

Problem Display
PID: 18884 (1Q6/8/2r5/P1k1N1R1/4P3/4b2r/K4N2/6B1 w - - 0 1)

Barnes, Barry Peter

2nd Prize, BCPS Ring Ty., 1959

1Q6/8/2r5/P1k1N1R1/4P3/4b2r/K4N2/6B1

#2

8 + 4

4258 Brian Harley Award 1959
312 Evening News 1959
3147 Chess Problems: Introduction to an Art 1963
3749 FIDE Album (1959-1961) 1966
3310 2345 Chess Problems 1997
4199 Barnes about Chess Problems 2001
3389 Belgian Solving Championship 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Rb6
      • 2.Qxb6#
    • 1...Rc7
      • 2.Qb6#
    • 1...Rc8
      • 2.Qb6#
    • 1...Bc1
      • 2.Sfd3#
    • 1...Bd2
      • 2.Sfd3#
    • 1...Bf4
      • 2.Sfd3#
    • 1...Bxg5
      • 2.Sfd3#
  • Tries
    • 1.Sed3+?
      • 1...Kc4
        • 2.Qb4#
      • 1...Kd4!
    • 1.Sf3+?
      • 1...Kc4
        • 2.Qb3#
      • 1...Bxg5!
  • Keys
    • 1.Kb3!
      • threat
        • 2.Qb4#
      • 1...Rb6+
        • 2.Qxb6#
      • 1...Bc1+
        • 2.Sfd3#
      • 1...Bd2+
        • 2.Sfd3#
      • 1...Bxf2+
        • 2.Sf3#
      • 1...Bd4+
        • 2.Sed3#
      • 1...Bf4+
        • 2.Sfd3#
      • 1...Bxg5+
        • 2.Sfd3#
      • 1...Kd4
        • 2.Sxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • R(d);N_GUARD::QAB1(H),XR(d)
    • R(d);N_GUARD::QAB1(H)
    • B(a);::B(A)+S(C),DCHECK
    • B(a);XR(G)::B(A)+S(C),DCHECK
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR1(H)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(F);CHECK
      • Vars
        • K(c);P-FLIGHT::QAB1(H)
      • Refutation
        • B(a);XR(G)
  • Actual
    • K(B);S_FLIGHT
    • Threat
      • QAB1(H)
    • Vars
      • R(d);CHECK,N_GUARD::QAB1(H),XR(d)
      • B(a);CHECK::B(A)+S(C),DCHECK
      • B(a);CHECK,N_GUARD,P_SPINB(a),XS(C)::R(G)+S(F)
      • B(a);CHECK,SBLOCK::R(G)+S(F),DCHECK
      • B(a);CHECK,XR(G)::B(A)+S(C),DCHECK
      • K(c);S_FLIGHT::S(F),XR(d)
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