MESON Chess Problem Database

Problem Display
PID: 84652 (8/5R2/3Q4/3ppn2/4kp1P/2PRP1b1/b1Pn2P1/2BN3K w - - 0 1)

Fillery, William Edmund Frank

American Chess Problemist, 1949

8/5R2/3Q4/3ppn2/4kp1P/2PRP1b1/b1Pn2P1/2BN3K

#2

11 + 8

565 Montreal Gazette 1950
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bb1
      • 2.Qxd5#
    • 1...Bf2
      • 2.Sxf2#
    • 1...Bh2
      • 2.Sf2#
    • 1...Sb3
      • 2.Qxd5#
    • 1...Sc4
      • 2.Qxd5#
  • Tries
    • 1.Rd4+?
      • 1...exd4
        • 2.Qe6#
      • 1...Sxd4!
    • 1.Qe6?
      • threat
        • 2.Qxf5#
      • 1...Sxe3
        • 2.Rd4#
      • 1...Sxh4
        • 2.Rd4#
      • 1...Sd4
        • 2.Rxd4#
      • 1...Sd6
        • 2.Rd4#
      • 1...Sh6
        • 2.Rd4#
      • 1...Se7
        • 2.Rd4#
      • 1...Sg7
        • 2.Rd4#
      • 1...d4!
    • 1.c4?
      • threat
        • 2.Sc3#
        • 2.Qxd5#
      • 1...Bxc4
        • 2.Sc3#
      • 1...Sxe3
        • 2.Sc3#
      • 1...Sxd6
        • 2.Sc3#
      • 1...dxc4
        • 2.Sc3#
        • 2.Qd5#
        • 2.Qc6#
      • 1...Sb1
        • 2.Qxd5#
      • 1...Se7
        • 2.Sc3#
      • 1...d4
        • 2.Qd5#
        • 2.Qc6#
      • 1...fxe3!
  • Keys
    • 1.exf4!
      • threat
        • 2.Qxe5#
      • 1...Kxf4
        • 2.Rd4#
      • 1...Bxf4
        • 2.Sf2#
      • 1...Sxd6
        • 2.Re3#
      • 1...exf4
        • 2.Qe6#
      • 1...Sf3
        • 2.gxf3#
      • 1...Sc4
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 4
  • Sets
    • B(a);N_GUARD::QAB1(J),XP(f)
    • B(c);N_GUARD::S(B),XB(c)
    • B(c);N_GUARD::S(B)
    • S(b);S_CUTB(a)::QAB1(J),XP(f)
  • Tries
    • Try
      • R(G);CHECK
      • Vars
        • P(g);S_CUTS(h),XR(G)::QAR2(J)
      • Refutation
        • S(h);XR(G)
    • Try
      • Q(J);P_PINP(g)
      • Threat
        • QAB1(J),XS(h)
      • Vars
        • S(h);N_GUARD,XP(H)::R1(G)
        • S(h);N_GUARD,XP(I)::R1(G)
        • S(h);N_GUARD::R1(G),XS(h)
        • S(h);N_GUARD::R1(G)
      • Refutation
        • P(f);
    • Try
      • P(F);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);XP(F)::S(B)
        • S(h);XP(H)::S(B)
        • S(h);XQ(J)::S(B)
        • S(b);::QAB1(J),XP(f)
        • S(h);::S(B)
      • Refutation
        • P(e);XP(H)
  • Actual
    • P(H);XP(e)
    • Threat
      • QAR1(J),XP(g)
    • Vars
      • K(d);P-FLIGHT,P_SPINP(g),P_SPINS(b),XP(H)::R(G)
      • B(c);N_GUARD,SBLOCK,XP(H)::S(B)
      • S(h);N_GUARD,XQ(J)::R1(G)
      • P(g);OGATEB,SBLOCK,XP(H)::QAR2(J)
      • S(b);OGATE::P(E),XS(b)
      • S(b);S_CUTB(a)::QAB1(J),XP(f)
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