MESON Chess Problem Database

Problem Display
PID: 53538 (8/5B2/5R1b/PqN1NR1b/n2kP3/2p2p2/2Pp1P2/3Q2BK w - - 0 1)

Brill, Robert C

4th Prize, Chess Life, 1955

8/5B2/5R1b/PqN1NR1b/n2kP3/2p2p2/2Pp1P2/3Q2BK

#2

12 + 8

268 Chess Life 1959

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc5
      • 2.Sc6#
    • 1...Qf1
      • 2.Sc6#
    • 1...Qe2
      • 2.Sc6#
    • 1...Qd3
      • 2.Sc6#
    • 1...Qc4
      • 2.Sc6#
    • 1...Qc6
      • 2.Sxc6#
    • 1...Qb1
      • 2.Sc6#
    • 1...Qb2
      • 2.Sc6#
    • 1...Qb3
      • 2.Sc6#
    • 1...Qb4
      • 2.Sc6#
    • 1...Qxa5
      • 2.Sc6#
    • 1...Qb8
      • 2.Sc6#
    • 1...Bg6
      • 2.Sxf3#
  • Keys
    • 1.Qe2!
      • threat
        • 2.Se6#
      • 1...Kxc5
        • 2.Sc6#
      • 1...Qxe2
        • 2.Sc6#
      • 1...Qxc5
        • 2.Qd3#
      • 1...Bxf7
        • 2.Sxf3#
      • 1...Sxc5
        • 2.Rd6#
      • 1...fxe2
        • 2.f4#
      • 1...Qc4
        • 2.Sc6#
        • 2.Qxc4#
      • 1...Qa6
        • 2.Sb3#
      • 1...Qc6
        • 2.Sb3#
        • 2.Sxc6#
        • 2.Qc4#
      • 1...Qd7
        • 2.Sb3#
        • 2.Qc4#
      • 1...Qe8
        • 2.Sb3#
        • 2.Qc4#
      • 1...Qb3
        • 2.Sxb3#
        • 2.Sc6#
      • 1...Qb6
        • 2.Qc4#
      • 1...Be3
        • 2.Qxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 11
  • Sets
    • K(e);N_SPINP(a),S_FLIGHT,XS(H)::R(J)+S(I)
    • Q(f);N_GUARD,P_PINB(B)::S(I)
    • Q(f);N_GUARD::S(I)
    • Q(f);N_GUARD,N_SPINP(a)::S(I)
    • Q(f);N_GUARD::S(I),XQ(f)
    • Q(f);N_GUARD,XP(G)::S(I)
    • B(g);N_GUARD::S(I),XP(c)
  • Actual
    • Q(A);N_PINP(a)
    • Threat
      • S(H)
    • Vars
      • K(e);S_FLIGHT,XS(H)::R(J)+S(I)
      • Q(f);N_GUARD,XQ(A)::S(I)
      • Q(f);N_GUARD,SBLOCK,XS(H)::QAR1(A)
      • B(g);N_GUARD,XB(L)::S(I),XP(c)
      • S(d);SBLOCK,XS(H)::R(K)
      • P(c);OGATE,XQ(A)::B(B)+P(E)
      • Q(f);N_GUARD::S(H)
      • Q(f);N_GUARD::QAR1(A)
      • B(h);N_GUARD::QAB1(A),XB(h)
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Developed and maintained by Brian Stephenson.
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