MESON Chess Problem Database

Problem Display
PID: 79359 (qb4R1/nr3kNP/1r4p1/1p2p1B1/6Q1/5N2/8/6K1 w - - 0 1)

King-Farlow, Charles P

The Tablet, 1964

(First published on Sat Oct 3 1964)

qb4R1/nr3kNP/1r4p1/1p2p1B1/6Q1/5N2/8/6K1

#2

7 + 9

15239 Valois Notebooks 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Rd6
      • 2.Sxe5#
    • 1...Re6
      • 2.Qxe6#
    • 1...Rc7
      • 2.Sxe5#
    • 1...Rd7
      • 2.Qxd7#
    • 1...Bd6
      • 2.Qe6#
    • 1...Bc7
      • 2.Qd7#
    • 1...Sc6
      • 2.Qe6#
  • Tries
    • 1.Rf8+?
      • 1...Kxg7
        • 2.h8Q#
      • 1...Kxf8!
    • 1.Qf5+?
      • 1...Rf6
        • 2.Qxf6#
      • 1...gxf5!
    • 1.Qc8?
      • threat
        • 2.Qe8#
        • 2.Qf8#
        • 2.h8S#
      • 1...Rf6
        • 2.Qe8#
        • 2.Qf8#
      • 1...Re6
        • 2.Qxe6#
        • 2.Qf8#
        • 2.h8S#
      • 1...Re7
        • 2.Qf8#
        • 2.h8S#
      • 1...Bd6
        • 2.Qe6#
        • 2.h8S#
      • 1...Bc7
        • 2.Qd7#
        • 2.h8S#
      • 1...Sxc8!
    • 1.Qc4+?
      • 1...Re6
        • 2.Qxe6#
      • 1...bxc4!
    • 1.Qf4+?
      • 1...Rf6
        • 2.Qxf6#
      • 1...exf4!
    • 1.h8Q?
      • threat
        • 2.Rf8#
      • 1...Bd6
        • 2.Qe6#
      • 1...Bc7
        • 2.Qd7#
      • 1...Rf6!
  • Keys
    • 1.Qb4!
      • threat
        • 2.Qf8#
      • 1...Rd6
        • 2.Sxe5#
      • 1...Re7
        • 2.Qxe7#
      • 1...Bd6
        • 2.Qb3#
      • 1...Bc7
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • R(c);S_CUTB(i)::S(B),XP(b)
    • R(c);N_GUARD::QAB1(C),XR(c)
    • R(f);S_CUTB(i)::S(B),XP(b)
    • R(f);N_GUARD::QAR2(C),XR(f)
    • B(i);S_CUTR(c)::QAB1(C)
    • B(i);S_CUTR(f)::QAR2(C)
    • S(e);S_CUTR(c)::QAB1(C)
  • Tries
    • Try
      • R(G);CHECK
      • Vars
        • K(g);P-FLIGHT,XS(E)::P=Q
      • Refutation
        • K(g);P-FLIGHT,XR(G)
    • Try
      • Q(C);CHECK
      • Vars
        • R(c);N_GUARD,P_SPINR(c)::QAR1(C),XR(c)
      • Refutation
        • P(d);XQ(C)
    • Try
      • Q(C);
      • Threat
        • DUALS(3)
      • Refutation
        • S(e);XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • R(c);N_GUARD,P_SPINR(c)::QAB1(C),XR(c)
      • Refutation
        • P(a);XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • R(c);N_GUARD,P_SPINR(c)::QAR1(C),XR(c)
      • Refutation
        • P(b);XQ(C)
    • Try
      • P(F);
      • Threat
        • R1(G)
      • Vars
        • B(i);S_CUTR(c)::QAB1(C)
        • B(i);S_CUTR(f)::QAR2(C)
      • Refutation
        • R(c);
  • Actual
    • Q(C);
    • Threat
      • QAR1(C)
    • Vars
      • R(c);S_CUTB(i)::S(B),XP(b)
      • R(f);N_GUARD::QAR1(C),XR(f)
      • B(i);S_CUTR(c)::QAB(C)
      • B(i);S_CUTR(f)::QAR1(C)
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