MESON Chess Problem Database

Problem Display
PID: 132207 (3R1QBK/8/r4p2/r3k1N1/3n3N/1p2p1P1/4p2B/1b3q2 w - - 0 1)

Luke, R

The Field, 1956

(First published on Thu May 3 1956)

3R1QBK/8/r4p2/r3k1N1/3n3N/1p2p1P1/4p2B/1b3q2

#2

8 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qc1
      • 2.g4#
    • 1...Qd1
      • 2.g4#
    • 1...Qf4
      • 2.gxf4#
    • 1...Ra1
      • 2.Rd5#
      • 2.Qc5#
    • 1...Ra2
      • 2.Rd5#
      • 2.Qc5#
    • 1...Ra3
      • 2.Rd5#
      • 2.Qc5#
    • 1...Ra4
      • 2.Rd5#
      • 2.Qc5#
    • 1...Rc5
      • 2.Qxc5#
    • 1...Rd5
      • 2.Rxd5#
    • 1...Rd6
      • 2.Qxd6#
    • 1...Ra7
      • 2.Qd6#
    • 1...Ra8
      • 2.Qd6#
    • 1...Sb5
      • 2.Rd5#
      • 2.Qc5#
    • 1...Sf5
      • 2.Sg6#
    • 1...Sc6
      • 2.Qd6#
  • Tries
    • 1.Sf7+?
      • 1...Ke6
        • 2.Qe8#
      • 1...Ke4!
  • Keys
    • 1.Qb4!
      • threat
        • 2.Qxd4#
      • 1...Qd1
        • 2.g4#
      • 1...Qf4
        • 2.gxf4#
      • 1...Ra4
        • 2.Rd5#
        • 2.Qc5#
      • 1...Rd5
        • 2.Rxd5#
      • 1...Rd6
        • 2.Qxd6#
      • 1...Sc2
        • 2.Qe4#
      • 1...Sf3
        • 2.Qf4#
      • 1...Sb5
        • 2.Rd5#
        • 2.Qc5#
      • 1...Sf5
        • 2.Sg6#
      • 1...Sc6
        • 2.Qd6#
      • 1...Se6
        • 2.Sf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • Q(b);N_GUARD::B(A)+P(B)
    • Q(b);OGATE::P(B),XQ(b)
    • R(g);N_GUARD::QAR2(F),XR(g)
    • R(g);N_GUARD::R1(E),XR(g)
    • R(i);N_GUARD::QAB1(F),XR(i)
    • R(i);N_GUARD::QAB1(F)
    • S(f);SBLOCK,S_CUTB(a)::S(C)
    • S(f);S_CUTR(i)::QAB1(F)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(h);P-FLIGHT::QAR2(F)
      • Refutation
        • K(h);P-FLIGHT
  • Actual
    • Q(F);
    • Threat
      • QAB1(F),XS(f)
    • Vars
      • Q(b);N_GUARD::B(A)+P(B)
      • Q(b);OGATE::P(B),XQ(b)
      • R(g);N_GUARD::R1(E),XR(g)
      • R(i);N_GUARD::QAB1(F),XR(i)
      • S(f);OGATE::QAR1(F)
      • S(f);OGATE::QAB1(F)
      • S(f);SBLOCK,S_CUTB(a)::S(C)
      • S(f);S_CUTR(i)::QAB1(F)
      • S(f);SBLOCK::S(D)
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