MESON Chess Problem Database

Problem Display
PID: 287213 (8/8/5bN1/8/3p2R1/1p1Npk1B/pQ2p3/K6n w - - 0 1)

Sumner, Christopher Richard Benson

Grantham Journal, 1924

(First published on Sat Nov 8 1924)

8/8/5bN1/8/3p2R1/1p1Npk1B/pQ2p3/K6n

#2

6 + 8

15239 Valois Notebooks 2026

SOLUTION

  • SOUND
  • Sets
    • 1...Bh4
      • 2.Sxh4#
      • 2.Sge5#
    • 1...Be5
      • 2.Sh4#
      • 2.Sgxe5#
    • 1...Bg5
      • 2.Sge5#
    • 1...Be7
      • 2.Sge5#
    • 1...Bg7
      • 2.Sh4#
    • 1...Bd8
      • 2.Sge5#
    • 1...Bh8
      • 2.Sh4#
    • 1...Sf2
      • 2.Se1#
    • 1...Sg3
      • 2.Rf4#
    • 1...e1Q+
      • 2.Sxe1#
    • 1...e1S
      • 2.Sxe1#
    • 1...e1B
      • 2.Sxe1#
      • 2.Qg2#
    • 1...e1R+
      • 2.Sxe1#
  • Keys
    • 1.Sc1!
      • threat
        • 2.Qxe2#
      • 1...Kf2
        • 2.Qxe2#
      • 1...e1Q
        • 2.Qg2#
      • 1...e1S
        • 2.Qe2#
      • 1...e1B
        • 2.Qe2#
        • 2.Qg2#
      • 1...e1R
        • 2.Qg2#
      • 1...Sg3
        • 2.Rf4#
      • 1...d3
        • 2.Qxf6#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • B(h);N_GUARD::S(F)
    • S(a);SBLOCK::S(C)
    • S(a);SBLOCK::R1(E)
    • P(c);CHECK::S(C),XQ(c)
    • P(c);::S(C),XS(c)
    • P(c);CHECK::S(C),XR(c)
  • Actual
    • S(C);
    • Threat
      • QAB1(B),XP(c)
    • Vars
      • K(f);P-FLIGHT,P_SPINP(c)::QAR1(B),XP(c)
      • P(c);OGATE,P_PINS(C)::QAB1(B)
      • P(c);::QAB1(B)
      • S(a);SBLOCK::R1(E)
      • P(g);OGATE,P_PINQ(B)::QAR(B),XB(h)
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