MESON Chess Problem Database

Problem Display
PID: 184770 (5N2/3p2p1/R2N2n1/ppRPk3/rp6/2n5/P2B3K/5Q2 w - - 0 1)

Feigl, Maximilian

L'Echiquier Francais, 1908

5N2/3p2p1/R2N2n1/ppRPk3/rp6/2n5/P2B3K/5Q2

#2

9 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sxd5
      • 2.Qa1#
    • 1...Sf4
      • 2.Qxf4#
    • 1...Sh4
      • 2.Qf4#
    • 1...Se7
      • 2.Qf4#
    • 1...Sxf8
      • 2.Qf4#
    • 1...Sh8
      • 2.Qf4#
  • Tries
    • 1.Se6?
      • threat
        • 2.Qf5#
      • 1...Sf4
        • 2.Qxf4#
      • 1...Sh4
        • 2.Qf4#
      • 1...Se7
        • 2.Qf4#
      • 1...dxe6!
    • 1.Be3?
      • threat
        • 2.Sxg6#
        • 2.Sxd7#
        • 2.Qf5#
      • 1...Sxd5
        • 2.Qa1#
        • 2.Qf5#
      • 1...Sxf8
        • 2.Qf4#
        • 2.Qf5#
      • 1...Sf4
        • 2.Sxd7#
        • 2.Qxf4#
      • 1...Sh4
        • 2.Sxd7#
        • 2.Qf4#
      • 1...Se7
        • 2.Sxd7#
        • 2.Qf4#
      • 1...Sh8
        • 2.Sxd7#
        • 2.Qf4#
        • 2.Qf5#
      • 1...Rxa2+!
    • 1.Qd3?
      • threat
        • 2.Sf7#
        • 2.Sxd7#
      • 1...Sxd5
        • 2.Sf7#
      • 1...Sxf8
        • 2.Sf7#
      • 1...Se4
        • 2.Sxd7#
      • 1...Sh8
        • 2.Sxd7#
      • 1...Kf6!
    • 1.Qf2?
      • threat
        • 2.Sxg6#
        • 2.Sxd7#
      • 1...Sxf8
        • 2.Qf4#
      • 1...Sf4
        • 2.Sxd7#
        • 2.Qxf4#
      • 1...Sh4
        • 2.Sxd7#
        • 2.Qf4#
      • 1...Se7
        • 2.Sxd7#
        • 2.Qf4#
      • 1...Sh8
        • 2.Sxd7#
        • 2.Qf4#
      • 1...Sxd5!
  • Keys
    • 1.Qg1!
      • threat
        • 2.Sxd7#
      • 1...Kf6
        • 2.Qg5#
      • 1...Sxd5
        • 2.Qa1#
      • 1...Sxf8
        • 2.Qxg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • S(a);OGATEB,P_SPINS(a),XP(F)::QAB(A)
    • S(g);N_GUARD::QAB1(A),XS(g)
    • S(g);N_GUARD::QAB1(A)
    • S(g);N_GUARD,XS(I)::QAB1(A)
  • Tries
    • Try
      • S(I);
      • Threat
        • QAR1(A)
      • Vars
        • S(g);N_GUARD::QAB1(A),XS(g)
        • S(g);N_GUARD::QAB1(A)
      • Refutation
        • P(h);XS(I)
    • Try
      • B(C);
      • Threat
        • DUALS(3)
      • Refutation
        • R(b);CHECK,XP(B)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);P_SPINS(a),XP(F)::S(H)
        • S(g);XS(I)::S(H)
        • S(a);::S(I),XP(h)
        • S(g);::S(I),XP(h)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(g);N_GUARD,XS(I)::QAB1(A)
      • Refutation
        • S(a);P_SPINS(a),XP(F)
  • Actual
    • Q(A);
    • Threat
      • S(I),XP(h)
    • Vars
      • K(f);S_FLIGHT::QAB1(A)
      • S(a);OGATEB,P_SPINS(a),XP(F)::QAB(A)
      • S(g);OGATE,XS(I)::QAB(A),XP(i)
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Developed and maintained by Brian Stephenson.
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