MESON Chess Problem Database

Problem Display
PID: 77338 (3N4/5R2/8/4k2n/2P3QP/6p1/6K1/8 w - - 0 1)

Davey, David Murray

The Tablet, 1951

(First published on Sat Apr 14 1951)

3N4/5R2/8/4k2n/2P3QP/6p1/6K1/8

#2

6 + 3

15239 Valois Notebooks 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Kd6
      • 2.Qd4#
    • 1...Sf4+
      • 2.Qxf4#
    • 1...Sg7
      • 2.Qf4#
  • Tries
    • 1.Kf3?
      • 1...Kd6
        • 2.Qd4#
      • 1...Sf4
        • 2.Qxf4#
      • 1...Sf6
        • 2.Qf4#
      • 1...Sg7
        • 2.Qf4#
      • 1...g2!
    • 1.Rf1?
      • threat
        • 2.Sf7#
      • 1...Sf4+
        • 2.Qxf4#
      • 1...Kd6!
    • 1.Rf3?
      • threat
        • 2.Sf7#
      • 1...Sf4+
        • 2.Qxf4#
      • 1...Kd6!
    • 1.Re7+?
      • 1...Kf6
        • 2.Re6#
        • 2.Qe6#
        • 2.Qg5#
      • 1...Kd6!
    • 1.Rf8?
      • 1...Sf4+
        • 2.Qxf4#
      • 1...Sg7
        • 2.Qf4#
      • 1...Sf6
        • 2.Sf7#
      • 1...Kd6!
    • 1.Qe2+?
      • 1...Kd6
        • 2.Qe7#
      • 1...Kd4!
    • 1.Qf5+?
      • 1...Kd6
        • 2.Rd7#
        • 2.Qd5#
        • 2.c5#
      • 1...Kd4!
    • 1.Qe4+?
      • 1...Kd6
        • 2.Sb7#
        • 2.Qd5#
        • 2.Qd4#
        • 2.Qe7#
      • 1...Kxe4!
  • Keys
    • 1.Rf6!
      • threat
        • 2.Re6#
      • 1...Sf4+
        • 2.Qxf4#
      • 1...Kxf6
        • 2.Qg5#
      • 1...Sxf6
        • 2.Sf7#
      • 1...Sg7
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • K(b);S_FLIGHT::QAR2(C)
    • S(c);CHECK,N_GUARD::QAB1(C),XS(c)
    • S(c);N_GUARD::QAB1(C)
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Vars
        • K(b);S_FLIGHT::QAR2(C)
        • S(c);N_GUARD::QAB1(C),XS(c)
        • S(c);N_GUARD::QAB1(C)
      • Refutation
        • P(a);
    • Try
      • R(E);
      • Threat
        • S(F)
      • Vars
        • S(c);CHECK,N_GUARD::QAB1(C),XS(c)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(E);
      • Threat
        • S(F)
      • Vars
        • S(c);CHECK,N_GUARD::QAB1(C),XS(c)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(E);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(E);
      • Vars
        • S(c);CHECK,N_GUARD::QAB1(C),XS(c)
        • S(c);N_GUARD::QAB1(C)
        • S(c);SBLOCK::S(F)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAB1(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Refutation
        • K(b);P-FLIGHT,XQ(C)
  • Actual
    • R(E);
    • Threat
      • R1(E)
    • Vars
      • S(c);CHECK,N_GUARD::QAB1(C),XS(c)
      • K(b);S_FLIGHT,XR(E)::QAB1(C)
      • S(c);SBLOCK,XR(E)::S(F)
      • S(c);N_GUARD::QAB1(C)
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