MESON Chess Problem Database

Problem Display
PID: 245767 (2r1nN2/p3p1p1/B7/KN2qp2/RPkp1p2/P4Q1R/1Bp1p3/n3r3 w - - 0 1)

Wrobel, Marian

Arbejder-Skak, 1947

2r1nN2/p3p1p1/B7/KN2qp2/RPkp1p2/P4Q1R/1Bp1p3/n3r3

#2

10 + 14

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qd6
      • 2.Sxd6#
    • 1...Qf6
      • 2.Sd6#
    • 1...Qc7+
      • 2.Sxc7#
    • 1...Qb8
      • 2.Sd6#
    • 1...Qe3
      • 2.Sxd4#
    • 1...Qe4
      • 2.Sc7#
    • 1...Qxb5+
      • 2.Bxb5#
    • 1...Qd5
      • 2.Qd3#
    • 1...Qe6
      • 2.Sd6#
    • 1...Sb3+
      • 2.Qxb3#
    • 1...d3
      • 2.Qxd3#
  • Tries
    • 1.Qc6+?
      • 1...Qc5
        • 2.bxc5#
      • 1...Rxc6!
  • Keys
    • 1.Sd7!
      • threat
        • 2.Sxe5#
      • 1...Qc7+
        • 2.Sxc7#
      • 1...Qxb5+
        • 2.Bxb5#
      • 1...Sb3+
        • 2.Qxb3#
      • 1...Qe3
        • 2.Sxd4#
      • 1...Qe4
        • 2.Sc7#
      • 1...d3
        • 2.Qxd3#
      • 1...Qd6
        • 2.Sxd6#
      • 1...Qf6
        • 2.Sd6#
      • 1...Qb8
        • 2.Sd6#
      • 1...Qc5
        • 2.bxc5#
      • 1...Qd5
        • 2.Qd3#
      • 1...Qe6
        • 2.Sd6#
      • 1...Rc5
        • 2.bxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • Q(h);N_PINS(H)::B(I)+S(H),DCHECK,XQ(h)
    • Q(h);N_PINS(H)::B(I)+S(H),DCHECK
    • Q(h);CHECK,N_PINS(H)::B(I)+S(H),XQ(h)
    • Q(h);N_PINS(H)::B(I)+S(H),XP(f)
    • Q(h);N_PINS(H)::B(I)+S(H)
    • Q(h);CHECK,OGATE,P_SPINQ(h),XS(H)::B(I),XQ(h)
    • Q(h);SBLOCK::QAB1(C)
    • S(a);CHECK,N_GUARD::QAB1(C),XS(a)
    • P(f);::QAB1(C),XP(f)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • Q(h);OGATE,P_SPINQ(h)::R(E)+P(F),XQ(h)
      • Refutation
        • R(m);XQ(C)
  • Actual
    • S(J);
    • Threat
      • S(J),XQ(h)
    • Vars
      • Q(h);CHECK,N_PINS(H)::B(I)+S(H),XQ(h)
      • Q(h);CHECK,OGATE,P_SPINQ(h),XS(H)::B(I),XQ(h)
      • S(a);CHECK,N_GUARD::QAB1(C),XS(a)
      • Q(h);N_PINS(H)::B(I)+S(H),XP(f)
      • Q(h);N_PINS(H)::B(I)+S(H)
      • P(f);::QAB1(C),XP(f)
      • Q(h);N_PINS(H)::B(I)+S(H),DCHECK,XQ(h)
      • Q(h);N_PINS(H)::B(I)+S(H),DCHECK
      • Q(h);OGATE::R(E)+P(F),XQ(h)
      • Q(h);SBLOCK::QAB1(C)
      • R(m);OGATE::R(E)+P(F),XR(m)
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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).