MESON Chess Problem Database

Problem Display
PID: 50903 (3nB2b/B2N4/2R2p2/3kP1p1/p2p4/qP2p3/pnQ1P3/K7 w - - 0 1)

Fison, Bernard

Chess Amateur (The), 1908

3nB2b/B2N4/2R2p2/3kP1p1/p2p4/qP2p3/pnQ1P3/K7

#2

9 + 11

15351 SCPF/BCPS Black Books 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Qd6
      • 2.Rxd6#
    • 1...Qxb3
      • 2.Rd6#
    • 1...Sxc6
      • 2.Bf7#
    • 1...Sb7
      • 2.Bf7#
    • 1...Sf7
      • 2.Bxf7#
    • 1...fxe5
      • 2.Sb6#
  • Tries
    • 1.Sxf6+?
      • 1...Kxe5
        • 2.Qe4#
      • 1...Bxf6!
    • 1.Bh5?
      • threat
        • 2.Bf3#
      • 1...Sxc6
        • 2.Bf7#
      • 1...fxe5
        • 2.Sb6#
      • 1...Qd6
        • 2.Rxd6#
      • 1...g4!
    • 1.Bf7+?
      • 1...Se6
        • 2.Bxe6#
      • 1...Sxf7!
    • 1.Qf5?
      • threat
        • 2.Sb6#
        • 2.Qf3#
      • 1...Qxb3
        • 2.Rc5#
        • 2.Qf3#
      • 1...Sxc6
        • 2.Bf7#
      • 1...fxe5
        • 2.Sb6#
      • 1...Qb4
        • 2.Qf3#
      • 1...Qc5
        • 2.Rxc5#
        • 2.Qf3#
      • 1...Qd6
        • 2.Sb6#
        • 2.Rxd6#
      • 1...Sc4
        • 2.Qf3#
      • 1...d3
        • 2.Qf3#
      • 1...g4
        • 2.Sb6#
      • 1...Kxc6!
  • Keys
    • 1.Qh7!
      • threat
        • 2.Qh1#
      • 1...Kxc6
        • 2.Sxf6#
      • 1...Sxc6
        • 2.Bf7#
      • 1...fxe5
        • 2.Sb6#
      • 1...Qd6
        • 2.Rxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • Q(c);N_GUARD::R1(F),XQ(c)
    • Q(c);N_GUARD,XP(D)::R1(F)
    • S(j);N_GUARD,XR(F)::B(I)
    • S(j);N_GUARD::B(I)
    • S(j);N_GUARD::B(I),XS(j)
    • P(i);SBLOCK,XP(E)::S(H)
  • Tries
    • Try
      • S(H);CHECK,XP(i)
      • Vars
        • K(g);P-FLIGHT,XP(E)::QAR1(B)
      • Refutation
        • B(k);XS(H)
    • Try
      • B(I);
      • Threat
        • B(I)
      • Vars
        • S(j);N_GUARD,XR(F)::B(I)
        • P(i);SBLOCK,XP(E)::S(H)
        • Q(c);N_GUARD::R1(F),XQ(c)
      • Refutation
        • P(h);
    • Try
      • B(I);CHECK
      • Vars
        • S(j);N_GUARD,P_SPINS(j)::B(I),XS(j)
      • Refutation
        • S(j);XB(I)
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • S(j);N_GUARD,SBLOCK,XR(F)::B(I)
        • P(i);P_SPINP(i),XP(E)::S(H)
        • Q(c);::QAB(B)
        • S(b);::QAB(B)
        • P(f);::QAB(B)
        • P(h);::S(H)
      • Refutation
        • K(g);S_FLIGHT,XR(F)
  • Actual
    • Q(B);
    • Threat
      • QAB(B)
    • Vars
      • K(g);S_FLIGHT,XR(F)::B(I)+S(H),XP(i)
      • S(j);N_GUARD,SBLOCK,XR(F)::B(I)
      • P(i);SBLOCK,XP(E)::S(H)
      • Q(c);N_GUARD::R1(F),XQ(c)
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