MESON Chess Problem Database

Problem Display
PID: 258635 (2nb3r/2nPkpBp/7N/4P2p/4P2K/2N2b1B/8/3RQ3 w - - 0 1)

Pringle, TA

English Mechanic and World of Science, 1903

(First published on Fri Nov 27 1903)

2nb3r/2nPkpBp/7N/4P2p/4P2K/2N2b1B/8/3RQ3

#2

10 + 9

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Re8
      • 2.dxc8S#
    • 1...Rf8
      • 2.Bf6#
    • 1...Rg8
      • 2.Sxg8#
    • 1...Sb5
      • 2.Sd5#
    • 1...Sd5
      • 2.Sxd5#
    • 1...Sa6
      • 2.Sd5#
    • 1...Se6
      • 2.Sf5#
    • 1...Sa8
      • 2.Sd5#
    • 1...Se8
      • 2.Sd5#
      • 2.dxc8S#
    • 1...Sd6
      • 2.exd6#
    • 1...f5
      • 2.exf5 ep#
    • 1...f6
      • 2.exf6#
  • Tries
    • 1.dxc8Q?
      • threat
        • 2.Qd7#
      • 1...Ke8+
        • 2.Qxd8#
      • 1...Bg4!
  • Keys
    • 1.Qf2!
      • 1...Bxd1
        • 2.Qf6#
        • 2.Qxf7#
      • 1...Bxe4
        • 2.Qf6#
        • 2.Qxf7#
      • 1...Bg4
        • 2.Qf6#
        • 2.Qxf7#
      • 1...f5
        • 2.exf5 ep#
      • 1...Re8
        • 2.dxc8S#
      • 1...Rf8
        • 2.Bf6#
      • 1...Rg8
        • 2.Sxg8#
      • 1...Bh1
        • 2.Qf6#
        • 2.Qxf7#
      • 1...Be2
        • 2.Qf6#
        • 2.Qxf7#
      • 1...Bg2
        • 2.Qf6#
        • 2.Qxf7#
      • 1...Sb5
        • 2.Sd5#
      • 1...Sd5
        • 2.Sxd5#
      • 1...Sa6
        • 2.Sd5#
      • 1...Se6
        • 2.Sf5#
      • 1...Sa8
        • 2.Sd5#
      • 1...Se8
        • 2.Sd5#
        • 2.dxc8S#
      • 1...Sb6
        • 2.Qc5#
      • 1...Sd6
        • 2.exd6#
      • 1...Sa7
        • 2.Qc5#
      • 1...f6
        • 2.exf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(i);SBLOCK::PXS(g)=S
    • R(i);SBLOCK::B(J)
    • R(i);N_GUARD::S(H),XR(i)
    • S(c);N_GUARD::S(C)
    • S(c);N_GUARD::S(C),XS(c)
    • S(c);SBLOCK::S(H)
    • S(g);OGATE::P(G),XS(g)
    • P(e);OGATE::P(G),XP(e),EP
    • P(e);OGATE::P(G),XP(e)
  • Tries
    • Try
      • P(I);XS(g)
      • Threat
        • QAR1(I)
      • Vars
        • K(d);CHECK,P-FLIGHT,P_SPINB(h),S_CUTR(i)::QAR1(I),XB(h)
      • Refutation
        • B(a);
  • Actual
    • Q(B);
    • Vars
      • P(e);OGATE::P(G),XP(e),EP
      • R(i);SBLOCK::PXS(g)=S
      • R(i);SBLOCK::B(J)
      • R(i);N_GUARD::S(H),XR(i)
      • S(c);N_GUARD::S(C)
      • S(c);N_GUARD::S(C),XS(c)
      • S(c);SBLOCK::S(H)
      • S(g);N_GUARD::QAB(B)
      • S(g);OGATE::P(G),XS(g)
      • P(e);OGATE::P(G),XP(e)
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