MESON Chess Problem Database

Problem Display
PID: 258393 (5B2/2pK1p2/1p3N2/4k1b1/R4NB1/P2p3n/3P1np1/5RQr w - - 0 1)

Guest, Thomas

English Mechanic and World of Science, 1892

(First published on Fri May 20 1892)

5B2/2pK1p2/1p3N2/4k1b1/R4NB1/P2p3n/3P1np1/5RQr

#2

10 + 10

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Sd1
      • 2.Sxd3#
      • 2.Qd4#
    • 1...Se4
      • 2.Sxd3#
      • 2.Qd4#
    • 1...Sxg4
      • 2.Sxd3#
  • Tries
    • 1.Sxd3+?
      • 1...Sxd3
        • 2.Rf5#
        • 2.Re4#
        • 2.Qd4#
      • 1...Kxf6!
    • 1.Re4+?
      • 1...Sxe4
        • 2.Sxd3#
      • 1...Kxf6!
    • 1.Qxf2?
      • threat
        • 2.Sxd3#
        • 2.Qd4#
      • 1...Kxf6
        • 2.Qd4#
      • 1...Bxf4
        • 2.Qd4#
      • 1...Bxf6
        • 2.Qe1#
        • 2.Qe3#
        • 2.Qd4#
      • 1...Sxf4
        • 2.Qd4#
      • 1...gxf1Q
        • 2.Qd4#
      • 1...gxf1B
        • 2.Qd4#
      • 1...g1Q
        • 2.Sxd3#
      • 1...g1B
        • 2.Sxd3#
      • 1...c5
        • 2.Sxd3#
      • 1...Sxf2!
  • Keys
    • 1.Bb4!
      • threat
        • 2.Bc3#
      • 1...Kd4
        • 2.Bd6#
      • 1...Kxf4
        • 2.Bd6#
      • 1...Kxf6
        • 2.Bc3#
      • 1...Sxg4
        • 2.Sxd3#
      • 1...Sd1
        • 2.Sxd3#
      • 1...Se4
        • 2.Sxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • S(b);N_GUARD,XB(G)::S(F),XP(d)
  • Tries
    • Try
      • S(F);CHECK,XP(d)
      • Refutation
        • K(f);P_SPINS(b),S_FLIGHT,XS(H)
    • Try
      • R(E);CHECK
      • Vars
        • S(b);XR(E)::S(F),XP(d)
      • Refutation
        • K(f);S_FLIGHT,XS(H)
    • Try
      • Q(B);XS(b)
      • Threat
        • DUALS(2)
      • Vars
        • K(f);S_FLIGHT,XS(H)::QAB(B)
        • B(g);XS(F)::QAB1(B)
        • S(e);XS(F)::QAB1(B)
        • P(c);XR(A)::QAB1(B)
        • P(c);::S(F),XP(d)
        • P(i);::S(F),XP(d)
      • Refutation
        • S(e);XQ(B)
  • Actual
    • B(J);
    • Threat
      • B(J)
    • Vars
      • K(f);N_GUARD,P_SPINS(b),S_CUTP(i),S_FLIGHT::R(E)+B(J)
      • K(f);N_GUARD,P_SPINS(b),S_FLIGHT,XS(F)::R(E)+B(J),DCHECK
      • K(f);S_FLIGHT,XS(H)::B(J)
      • S(b);N_GUARD,XB(G)::S(F),XP(d)
      • S(b);N_GUARD::S(F),XP(d)
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