MESON Chess Problem Database

Problem Display
PID: 208748 (K1N3n1/8/kb2Nr1R/3PQp2/p2P4/4P1n1/6Bp/4B3 w - - 0 1)

Brown, Theodore Morris

St. Louis Globe Democrat, 1875

K1N3n1/8/kb2Nr1R/3PQp2/p2P4/4P1n1/6Bp/4B3

#2

10 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rf8
      • 2.Sc7#
    • 1...Bxd4
      • 2.Sc7#
    • 1...Bc5
      • 2.Sc7#
    • 1...Ba7
      • 2.Sc7#
    • 1...Bc7
      • 2.Sxc7#
    • 1...Sf1
      • 2.Bxf1#
    • 1...Sh1
      • 2.Bf1#
    • 1...Se4
      • 2.Bf1#
    • 1...Sh5
      • 2.Bf1#
  • Tries
    • 1.Bf1+?
      • 1...Se2
        • 2.Bxe2#
      • 1...Sxf1!
    • 1.Qc7?
      • threat
        • 2.Qxb6#
        • 2.Qc4#
      • 1...Rxe6
        • 2.Qc4#
      • 1...Bxd4
        • 2.Qa5#
        • 2.Qc4#
        • 2.Qb7#
      • 1...Bxc7
        • 2.Sxc7#
      • 1...Ba5
        • 2.Qxa5#
        • 2.Qc4#
        • 2.Qb7#
      • 1...Bc5
        • 2.Qa5#
        • 2.Qb7#
      • 1...Ba7
        • 2.Qa5#
        • 2.Qc4#
        • 2.Qb7#
      • 1...Kb5!
    • 1.Qe4?
      • threat
        • 2.Qd3#
      • 1...Kb5
        • 2.Qd3#
      • 1...Sxe4
        • 2.Bf1#
      • 1...fxe4!
  • Keys
    • 1.Qxf5!
      • threat
        • 2.Qd3#
      • 1...Kb5
        • 2.Qd3#
      • 1...Rxf5
        • 2.Sc7#
      • 1...Sxf5
        • 2.Bf1#
      • 1...Se4
        • 2.Bf1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 8
  • Sets
    • R(g);P_PINS(J),S_CUTB(f)::S(G)
    • B(f);N_GUARD,XP(D)::S(G)
    • B(f);N_GUARD::S(G)
    • B(f);N_GUARD::S(G),XB(f)
    • S(b);N_GUARD::B(B),XS(b)
    • S(b);N_GUARD::B(B)
  • Tries
    • Try
      • B(B);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::B(B),XS(b)
      • Refutation
        • S(b);XB(B)
    • Try
      • Q(F);
      • Threat
        • DUALS(2)
      • Vars
        • R(g);XS(G)::QAB(F)
        • B(f);XQ(F)::S(G),XB(f)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • Q(F);
      • Threat
        • QAB(F)
      • Vars
        • K(e);S_FLIGHT::QAB(F)
        • S(b);N_GUARD,XQ(F)::B(B)
      • Refutation
        • P(d);XQ(F)
  • Actual
    • Q(F);XP(d)
    • Threat
      • QAB(F)
    • Vars
      • K(e);S_FLIGHT::QAB(F)
      • R(g);S_CUTB(f),XQ(F)::S(G)
      • S(b);N_GUARD,XQ(F)::B(B)
      • S(b);N_GUARD::B(B)
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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).