MESON Chess Problem Database

Problem Display
PID: 84671 (b5B1/2Bn4/r3pp2/3k4/3N1R1r/b2P3N/1nQ4p/4R2K w - - 0 1)

Fillery, William Edmund Frank

Vancouver Province, 1985

b5B1/2Bn4/r3pp2/3k4/3N1R1r/b2P3N/1nQ4p/4R2K

#2

9 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ra4
      • 2.Bxe6#
    • 1...Ra5
      • 2.Bxe6#
    • 1...Ra7
      • 2.Bxe6#
    • 1...Bc5
      • 2.Qg2#
    • 1...Bd6
      • 2.Bxe6#
    • 1...Bc6
      • 2.Bxe6#
    • 1...Sd1
      • 2.Qc4#
    • 1...Sa4
      • 2.Qc4#
    • 1...Sc4
      • 2.Qxc4#
    • 1...Sb6
      • 2.Bxe6#
  • Tries
    • 1.Qb3+?
      • 1...Sc4
        • 2.Qxc4#
      • 1...Kc5+!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Se3#
      • 1...Rxh3
        • 2.Rd4#
      • 1...Rxf4
        • 2.Sxf4#
      • 1...Bc5
        • 2.Qg2#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sc5
        • 2.Se7#
      • 1...Rd6
        • 2.Se7#
      • 1...Bd6
        • 2.Bxe6#
      • 1...Sd1
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 6
  • Sets
    • R(f);N_GUARD::B(I),XP(g)
    • B(c);SBLOCK::QAB(C)
    • B(c);S_CUTR(f)::B(I),XP(g)
    • B(j);S_CUTR(f)::B(I),XP(g)
    • S(a);N_GUARD::QAB1(C)
    • S(a);N_GUARD::QAB1(C),XS(a)
    • S(i);S_CUTR(f)::B(I),XP(g)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAB1(C),XS(a)
      • Refutation
        • K(e);CHECK,N_SPINP(g),P-FLIGHT
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • R(d);N_GUARD,XS(E)::R1(G)
      • R(d);XR(G)::S(E),XR(d)
      • B(c);SBLOCK::QAB(C)
      • S(a);N_GUARD::QAB1(C),XS(a)
      • S(i);S_CUTB(c)::S(F)
      • R(f);S_CUTB(c)::S(F)
      • B(c);S_CUTR(f)::B(I),XP(g)
      • S(a);N_GUARD::QAB1(C)
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