MESON Chess Problem Database

Problem Display
PID: 31746 (8/1pN3b1/3P3p/1P6/2pk1p1B/Q3pB2/2K1P3/8 w - - 0 1)

Rowland, Frideswide F (Mrs TB, nee Beechey)

Youth, 0000

8/1pN3b1/3P3p/1P6/2pk1p1B/Q3pB2/2K1P3/8

#2

8 + 7

3467 Chess Blossoms 1883

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Qc5#
    • 1...Be5
      • 2.Se6#
    • 1...Bf6
      • 2.Bxf6#
    • 1...Bf8
      • 2.Bf6#
    • 1...c3
      • 2.Qxc3#
  • Tries
    • 1.Be1?
      • threat
        • 2.Bc3#
      • 1...c3
        • 2.Qxc3#
      • 1...Ke5!
    • 1.Qb2+?
      • 1...c3
        • 2.Qxc3#
      • 1...Kc5!
    • 1.Qa1+?
      • 1...c3
        • 2.Qxc3#
      • 1...Kc5!
    • 1.Qa7+?
      • 1...Ke5
        • 2.Qc5#
      • 1...b6!
  • Keys
    • 1.d7!
      • threat
        • 2.Qd6#
      • 1...Ke5
        • 2.Qc5#
      • 1...c3
        • 2.Qxc3#
      • 1...Be5
        • 2.Se6#
      • 1...Bf8
        • 2.Bf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • K(c);S_FLIGHT::QAR2(C)
    • B(g);SBLOCK::S(H)
    • B(g);N_GUARD::B(E),XB(g)
    • B(g);N_GUARD::B(E)
    • P(b);::QAB1(C),XP(b)
  • Tries
    • Try
      • B(E);
      • Threat
        • B(E)
      • Vars
        • P(b);::QAB1(C),XP(b)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • P(b);P_SPINP(b)::QAB1(C),XP(b)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • P(b);P_SPINP(b)::QAB1(C),XP(b)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR2(C)
      • Refutation
        • P(f);P_SPINP(f)
  • Actual
    • P(G);
    • Threat
      • QAR2(C)
    • Vars
      • K(c);S_FLIGHT::QAR2(C)
      • P(b);::QAB1(C),XP(b)
      • B(g);SBLOCK::S(H)
      • B(g);N_GUARD::B(E)
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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).