MESON Chess Problem Database

Problem Display
PID: 179502 (8/8/2p3p1/2pb2p1/2p3B1/2K1kp1N/4pR2/1Q6 w - - 0 1)

Beauruel, M

Bulletin Ouvrier des Echecs, 1952

8/8/2p3p1/2pb2p1/2p3B1/2K1kp1N/4pR2/1Q6

#2

5 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Be4
      • 2.Qc1#
    • 1...Be6
      • 2.Rxf3#
    • 1...Bf7
      • 2.Rxf3#
    • 1...Bg8
      • 2.Rxf3#
    • 1...e1Q+
      • 2.Qxe1#
    • 1...e1S
      • 2.Qxe1#
    • 1...e1B+
      • 2.Qxe1#
    • 1...e1R
      • 2.Qxe1#
  • Tries
    • 1.Bxf3?
      • threat
        • 2.Qc1#
      • 1...e1Q+
        • 2.Qxe1#
      • 1...e1B+
        • 2.Qxe1#
      • 1...e1R
        • 2.Qxe1#
      • 1...Bxf3!
    • 1.Bf5?
      • threat
        • 2.Qc1#
      • 1...e1Q+
        • 2.Qxe1#
      • 1...e1B+
        • 2.Qxe1#
      • 1...e1R
        • 2.Qxe1#
      • 1...gxf5!
  • Keys
    • 1.Qh1!
      • 1...e1Q+
        • 2.Qxe1#
      • 1...e1B+
        • 2.Qxe1#
      • 1...Ke4
        • 2.Rxe2#
      • 1...e1S
        • 2.Qxe1#
      • 1...e1R
        • 2.Qxe1#
      • 1...Be6
        • 2.Qxf3#
      • 1...Be4
        • 2.Qc1#
      • 1...Bf7
        • 2.Qxf3#
      • 1...Bg8
        • 2.Qxf3#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 3
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(f);SBLOCK::QAB(A)
    • B(f);N_GUARD::R1(B),XP(c)
    • P(a);CHECK,OGATEB::QAR2(A),XQ(a)
    • P(a);OGATEB::QAR2(A),XS(a)
    • P(a);CHECK,OGATEB::QAR2(A),XB(a)
    • P(a);OGATEB::QAR2(A),XR(a)
  • Tries
    • Try
      • B(E);XP(c)
      • Threat
        • QAB(A)
      • Vars
        • P(a);CHECK,OGATEB::QAR2(A),XQ(a)
        • P(a);CHECK,OGATEB::QAR2(A),XB(a)
        • P(a);OGATEB::QAR2(A),XR(a)
      • Refutation
        • B(f);XB(E)
    • Try
      • B(E);
      • Threat
        • QAB(A)
      • Vars
        • P(a);CHECK,OGATEB::QAR2(A),XQ(a)
        • P(a);CHECK,OGATEB::QAR2(A),XB(a)
        • P(a);OGATEB::QAR2(A),XR(a)
      • Refutation
        • P(i);XB(E)
  • Actual
    • Q(A);
    • Vars
      • P(a);CHECK,OGATEB::QAR2(A),XQ(a)
      • P(a);CHECK,OGATEB::QAR2(A),XB(a)
      • K(b);P-FLIGHT,P_SPINP(c)::R(B),XP(a)
      • P(a);OGATEB::QAR2(A),XS(a)
      • P(a);OGATEB::QAR2(A),XR(a)
      • B(f);N_GUARD::QAR1(A),XP(c)
      • B(f);SBLOCK::QAB(A)
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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).