MESON Chess Problem Database

Problem Display
PID: 69941 (rb6/1r3pp1/p1R3N1/3k1P2/QP6/1nPP1n2/1Kb4B/8 w - - 0 1)

Fillery, William Edmund Frank

Chess, 1949

rb6/1r3pp1/p1R3N1/3k1P2/QP6/1nPP1n2/1Kb4B/8

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rxb4
      • 2.Se7#
    • 1...Rb5
      • 2.Se7#
    • 1...Rb6
      • 2.Se7#
    • 1...Rc7
      • 2.Rd6#
    • 1...Re7
      • 2.Sxe7#
    • 1...Bd6
      • 2.Rxd6#
    • 1...Ba7
      • 2.Rd6#
    • 1...Bc7
      • 2.Se7#
    • 1...Sa1
      • 2.Rc5#
    • 1...Sc1
      • 2.Rc5#
    • 1...Sbd2
      • 2.Rc5#
    • 1...Sbd4
      • 2.Rc5#
      • 2.c4#
    • 1...Sa5
      • 2.Rc5#
    • 1...Sc5
      • 2.Rxc5#
    • 1...Sfd4
      • 2.c4#
    • 1...Se5
      • 2.Sf4#
  • Tries
    • 1.Qxb3+?
      • 1...Bxb3
        • 2.Rc5#
      • 1...Kxc6!
    • 1.Qb5+?
      • 1...Rxb5
        • 2.Se7#
      • 1...Sc5
        • 2.Rxc5#
        • 2.Qxc5#
      • 1...axb5!
    • 1.Qa5+?
      • 1...Rb5
        • 2.Se7#
      • 1...Sxa5
        • 2.Rc5#
      • 1...Sc5
        • 2.Rxc5#
        • 2.Qxc5#
      • 1...Kxc6!
  • Keys
    • 1.Rb6!
      • threat
        • 2.Qc6#
      • 1...Rxb6
        • 2.Se7#
      • 1...Rc7
        • 2.Rd6#
      • 1...Sbd4
        • 2.c4#
      • 1...Sa5
        • 2.Qxa5#
      • 1...Sfd4
        • 2.c4#
      • 1...Se5
        • 2.Sf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 10
  • Sets
    • R(f);N_GUARD,XP(F)::S(I)
    • R(f);N_GUARD::S(I)
    • R(f);S_CUTB(j)::R1(H)
    • R(f);N_GUARD::S(I),XR(f)
    • B(j);N_GUARD::R1(H),XB(j)
    • B(j);N_GUARD::R1(H)
    • B(j);S_CUTR(f)::S(I)
    • S(b);N_GUARD,P_PINP(F)::R1(H)
    • S(b);N_GUARD,P_PINP(F)::R1(H),XS(b)
    • S(c);SBLOCK::P(C)
    • S(c);SBLOCK,S_CUTB(j)::S(I)
  • Tries
    • Try
      • Q(E);CHECK,XS(b)
      • Vars
        • B(a);XQ(E)::R1(H)
      • Refutation
        • K(d);S_FLIGHT,XR(H)
    • Try
      • Q(E);CHECK
      • Vars
        • R(f);XQ(E)::S(I)
      • Refutation
        • P(e);XQ(E)
    • Try
      • Q(E);CHECK
      • Vars
        • R(f);P_SPINR(f)::S(I)
        • S(b);N_GUARD,P_PINP(F),XQ(E)::R1(H)
      • Refutation
        • K(d);S_FLIGHT,XR(H)
  • Actual
    • R(H);
    • Threat
      • QAB1(E)
    • Vars
      • R(f);N_GUARD,XR(H)::S(I)
      • R(f);S_CUTB(j)::R1(H)
      • S(b);SBLOCK::P(C)
      • S(b);N_GUARD::QAR(E),XS(b)
      • S(c);SBLOCK::P(C)
      • S(c);SBLOCK,S_CUTB(j)::S(I)
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