MESON Chess Problem Database

Problem Display
PID: 229597 (4r3/2p3Q1/3b4/N1p1R3/3k2P1/2N5/1Pp2p1p/3n2nK w - - 0 1)

Gray, Henry

Southend Times, 1937

(First published on Sun Jan 10 1937)

4r3/2p3Q1/3b4/N1p1R3/3k2P1/2N5/1Pp2p1p/3n2nK

#2

7 + 10

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Se3
      • 2.Rd5#
  • Tries
    • 1.Qg5?
      • threat
        • 2.Rd5#
      • 1...Kd3
        • 2.Rd5#
      • 1...Rxe5
        • 2.Qd2#
      • 1...Bxe5
        • 2.Qd2#
      • 1...Sxb2
        • 2.Qe3#
      • 1...Sxc3
        • 2.Qe3#
      • 1...Se3
        • 2.Qxe3#
      • 1...c6!
  • Keys
    • 1.Qh6!
      • threat
        • 2.Rd5#
      • 1...Kd3
        • 2.Rd5#
      • 1...Kxe5
        • 2.Sc6#
      • 1...Rxe5
        • 2.Qd2#
      • 1...Bxe5
        • 2.Qd2#
      • 1...Sxb2
        • 2.Qe3#
      • 1...Sxc3
        • 2.Qe3#
      • 1...Se3
        • 2.Qxe3#
      • 1...c6
        • 2.Qxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • S(a);SBLOCK::QAB(G)+R(F),DCHECK
  • Tries
    • Try
      • Q(G);
      • Threat
        • R1(F)
      • Vars
        • K(f);P-FLIGHT::R(F)
        • R(j);SBLOCK,XR(F)::QAR2(G)
        • B(h);SBLOCK,XR(F)::QAR2(G)
        • S(a);N_GUARD,XP(B)::QAB1(G)
        • S(a);N_GUARD,XS(C)::QAB1(G)
        • S(a);N_GUARD::QAB1(G),XS(a)
      • Refutation
        • P(i);
  • Actual
    • Q(G);
    • Threat
      • R1(F)
    • Vars
      • K(f);P-FLIGHT::R(F)
      • K(f);S_FLIGHT,XR(F)::S(E)
      • R(j);SBLOCK,XR(F)::QAR2(G)
      • B(h);SBLOCK,XR(F)::QAR2(G)
      • S(a);N_GUARD,XP(B)::QAB1(G)
      • S(a);N_GUARD,XS(C)::QAB1(G)
      • S(a);N_GUARD::QAB1(G),XS(a)
      • P(i);N_GUARD::QAR2(G),XB(h)
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