MESON Chess Problem Database

Problem Display
PID: 202406 (5R2/2p1n3/5p2/b2n2NR/5k2/1q3BNK/1B1P1P2/2Q5 w - - 0 1)

Tuxen, Harri Viggo

5th Prize, Il Secolo, 1923

5R2/2p1n3/5p2/b2n2NR/5k2/1q3BNK/1B1P1P2/2Q5

#2

10 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qd1
      • 2.Qc4#
    • 1...Qc4
      • 2.Qxc4#
    • 1...Qa3
      • 2.Qc4#
    • 1...Qxf3
      • 2.Se6#
    • 1...Qb7
      • 2.Qc4#
    • 1...Qb8
      • 2.Qc4#
    • 1...Sc3
      • 2.d4#
    • 1...Sb4
      • 2.d3#
    • 1...Sb6
      • 2.Qxc7#
    • 1...Sf5
      • 2.Se2#
    • 1...f5
      • 2.Se2#
  • Tries
    • 1.Bg4?
      • threat
        • 2.Se6#
      • 1...Qxg3+
        • 2.fxg3#
      • 1...Sc3
        • 2.d4#
      • 1...Qb6
        • 2.Se2#
      • 1...Se3
        • 2.Se2#
      • 1...Sb4
        • 2.d3#
      • 1...Sb6
        • 2.Qxc7#
      • 1...Qe3!
    • 1.Rxf6+?
      • 1...Sf5
        • 2.Se2#
        • 2.Rxf5#
      • 1...Sxf6!
    • 1.d3+?
      • 1...Se3
        • 2.Qxe3#
        • 2.fxe3#
      • 1...Bd2!
  • Keys
    • 1.Be4!
      • threat
        • 2.Se6#
      • 1...Qxg3+
        • 2.fxg3#
      • 1...Sc3
        • 2.d4#
      • 1...Qb6
        • 2.Se2#
      • 1...Se3
        • 2.Se2#
      • 1...Sb4
        • 2.d3#
      • 1...Sb6
        • 2.Qxc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 8
  • Sets
    • Q(a);N_GUARD::QAR(A)
    • Q(a);N_GUARD::QAR(A),XQ(a)
    • Q(a);P_PINS(F),SBLOCK,XB(E)::S(H)
    • S(d);N_GUARD,S_CUTB(c),S_CUTQ(a)::QAB(A)+P(C)
    • S(d);N_GUARD,S_CUTB(c)::QAB(A)+P(C)
    • S(d);N_GUARD,S_CUTB(c)::QAB(A),XP(f)
    • S(g);N_SPINP(e),SBLOCK::S(F)
    • P(e);::S(F)
  • Tries
    • Try
      • B(E);P_SPINS(F)
      • Threat
        • S(H)
      • Vars
        • Q(a);CHECK,OGATE,XS(F)::P(D),XQ(a)
        • S(d);N_GUARD,N_PINS(F),S_CUTB(c),S_CUTQ(a)::QAB(A)+P(C)
        • Q(a);N_PINS(F)::S(F)
        • S(d);N_PINS(F)::S(F)
        • S(d);N_GUARD,S_CUTB(c)::QAB(A)+P(C)
        • S(d);N_GUARD,S_CUTB(c)::QAB(A),XP(f)
      • Refutation
        • Q(a);
    • Try
      • R(J);CHECK,XP(e)
      • Refutation
        • S(d);XR(J)
    • Try
      • P(C);CHECK
      • Refutation
        • B(c);P_SPINB(c)
  • Actual
    • B(E);P_SPINS(F)
    • Threat
      • S(H)
    • Vars
      • Q(a);CHECK,OGATE,XS(F)::P(D),XQ(a)
      • S(d);N_GUARD,N_PINS(F),S_CUTB(c),S_CUTQ(a)::QAB(A)+P(C)
      • Q(a);N_PINS(F)::S(F)
      • S(d);N_PINS(F)::S(F)
      • S(d);N_GUARD,S_CUTB(c)::QAB(A)+P(C)
      • S(d);N_GUARD,S_CUTB(c)::QAB(A),XP(f)
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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).