MESON Chess Problem Database

Problem Display
PID: 180858 (3Q1nK1/1pRp1pp1/4k1p1/1N2b3/2RBP3/qN6/4B3/8 w - - 0 1)

Sanguedolce, ?

Bulletin Ouvrier des Echecs, 1952

3Q1nK1/1pRp1pp1/4k1p1/1N2b3/2RBP3/qN6/4B3/8

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qc1
      • 2.Sc5#
    • 1...Qb2
      • 2.Sc5#
    • 1...Qc5
      • 2.Sxc5#
    • 1...Qa1
      • 2.Sc5#
    • 1...Qa2
      • 2.Sc5#
    • 1...Qa4
      • 2.Sc5#
    • 1...Qa5
      • 2.Sc5#
    • 1...Qa6
      • 2.Sc5#
    • 1...Qa8
      • 2.Sc5#
    • 1...Bf6
      • 2.Bg4#
    • 1...d6
      • 2.Qe7#
  • Tries
    • 1.R4c6+?
      • 1...Qd6
        • 2.Sc5#
        • 2.Bc4#
      • 1...Bd6
        • 2.Bc4#
        • 2.Qe8#
      • 1...dxc6
        • 2.Bc4#
      • 1...d6
        • 2.Bc4#
        • 2.Qe7#
      • 1...bxc6!
    • 1.Qe8+?
      • 1...Kf6
        • 2.Qxe5#
      • 1...Qe7!
  • Keys
    • 1.R4c5!
      • threat
        • 2.Rxe5#
      • 1...Qxc5
        • 2.Sxc5#
      • 1...Bxd4
        • 2.S3xd4#
      • 1...Bxc7
        • 2.Qe8#
      • 1...Bh2
        • 2.Qe8#
      • 1...Bg3
        • 2.Qe8#
      • 1...Bf4
        • 2.Qe8#
      • 1...Bd6
        • 2.Bc4#
      • 1...Bf6
        • 2.Bg4#
      • 1...d5
        • 2.Qe7#
      • 1...d6
        • 2.Qe7#
      • 1...f6
        • 2.Qe8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 8
  • Sets
    • Q(a);N_GUARD::S(B)
    • Q(a);N_GUARD::S(B),XQ(a)
    • B(b);S_CUTP(g)::B(A)
    • P(f);S_CUTQ(a)::QAR1(H)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • P(f);XR(C)::B(A)
      • Refutation
        • P(e);XR(C)
    • Try
      • Q(H);CHECK
      • Vars
        • K(c);OGATE,P-FLIGHT,P_SPINB(b)::QAB1(H),XB(b)
      • Refutation
        • Q(a);P_SPINQ(a)
  • Actual
    • R(C);
    • Threat
      • R1(C),XB(b)
    • Vars
      • Q(a);XR(C)::S(B),XQ(a)
      • B(b);XB(D)::S(B),XB(b)
      • B(b);XR(G)::QAR2(H)
      • B(b);::QAR2(H)
      • B(b);S_CUTP(f)::B(A)
      • B(b);S_CUTP(g)::B(A)
      • P(f);::QAR1(H)
      • P(g);SBLOCK::QAR2(H)
HTML5 logo

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).