MESON Chess Problem Database

Problem Display
PID: 103275 (7b/K1p1R3/B4p1B/Q3qp1n/7N/3P1R2/1p2k3/1b1r1N2 w - - 0 1)

Madsen, Arthur Valdemar

El Diluvio, 1933

7b/K1p1R3/B4p1B/Q3qp1n/7N/3P1R2/1p2k3/1b1r1N2

#2

9 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qe3+
      • 2.Rexe3#
    • 1...Qe6
      • 2.Rxe6#
    • 1...Rc1
      • 2.Qd2#
    • 1...Re1
      • 2.Qd2#
    • 1...Rxf1
      • 2.Qd2#
    • 1...Rd2
      • 2.Qxd2#
    • 1...Rxd3
      • 2.Qd2#
    • 1...Sg3
      • 2.Sxg3#
    • 1...Sf4
      • 2.Sg3#
    • 1...Sg7
      • 2.Sg3#
  • Tries
    • 1.d4+?
      • 1...Rd3
        • 2.Qd2#
      • 1...Bd3!
  • Keys
    • 1.Be3!
      • threat
        • 2.Rf2#
      • 1...Qd4+
        • 2.Bxd4#
      • 1...Qxe3+
        • 2.Rexe3#
      • 1...Qc5+
        • 2.Bxc5#
      • 1...Qxa5
        • 2.Bc5#
      • 1...Rxf1
        • 2.Qd2#
      • 1...Rxd3
        • 2.Qd2#
      • 1...Qc3
        • 2.Bd4#
      • 1...Qb5
        • 2.Bc5#
      • 1...Rc1
        • 2.Qd2#
      • 1...Re1
        • 2.Qd2#
      • 1...Rd2
        • 2.Qxd2#
      • 1...Qh2
        • 2.Bf4#
      • 1...Qg3
        • 2.Bf4#
      • 1...Qf4
        • 2.Bxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 4
  • Sets
    • Q(e);CHECK,OGATE::R1(I),XQ(e)
    • Q(e);OGATEB::R(I),XQ(e)
    • R(b);N_GUARD::QAR1(E)
    • R(b);N_GUARD,XS(A)::QAR1(E)
    • R(b);N_GUARD::QAR1(E),XR(b)
    • R(b);N_GUARD,P_SPINR(b),XP(B)::QAR1(E)
    • S(g);N_GUARD::S(A),XS(g)
    • S(g);N_GUARD::S(A)
  • Tries
    • Try
      • P(B);CHECK
      • Vars
        • R(b);P_SPINR(b)::QAR1(E)
      • Refutation
        • B(a);P_SPINB(a)
  • Actual
    • B(G);N_PINQ(e)
    • Threat
      • R1(C)
    • Vars
      • Q(e);CHECK,OGATEB::R(I)+B(G),XQ(e)
      • Q(e);CHECK,OGATE,P_SPINQ(e),XB(G)::R1(I),XQ(e)
      • Q(e);OGATEB,P_PINB(F),XQ(E)::R(I)+B(G)
      • R(b);N_GUARD,XS(A)::QAR1(E)
      • R(b);N_GUARD,P_SPINR(b),XP(B)::QAR1(E)
      • Q(e);OGATEB::R(I)+B(G)
      • R(b);N_GUARD::QAR1(E)
      • R(b);N_GUARD::QAR1(E),XR(b)
      • Q(e);OGATEB::R(I)+B(G),XQ(e)
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).