MESON Chess Problem Database

Problem Display
PID: 245746 (4b2B/5q2/3pPPBn/1p2kNnN/1p2p3/1Q6/3P4/5K2 w - - 0 1)

Wrobel, Marian

Norsk Sjakkblad, 1927

4b2B/5q2/3pPPBn/1p2kNnN/1p2p3/1Q6/3P4/5K2

#2

9 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf6
      • 2.Bxf6#
    • 1...Qa7
      • 2.f7#
    • 1...Qb7
      • 2.f7#
    • 1...Qc7
      • 2.f7#
    • 1...Qd7
      • 2.f7#
    • 1...Qe7
      • 2.fxe7#
  • Tries
    • 1.Se3?
      • threat
        • 2.Qd5#
      • 1...Qxf6+
        • 2.Bxf6#
      • 1...Kd4
        • 2.Qd5#
      • 1...Qxe6
        • 2.Qb2#
      • 1...d5
        • 2.Qxd5#
      • 1...Qb7
        • 2.f7#
      • 1...Bc6!
    • 1.Qg3+?
      • 1...Kxe6
        • 2.Qxd6#
      • 1...Kd5!
  • Keys
    • 1.Se7!
      • threat
        • 2.Qd5#
      • 1...Qxf6+
        • 2.Bxf6#
      • 1...Kd4
        • 2.Qd5#
      • 1...Qxe6
        • 2.Qb2#
      • 1...Qxe7
        • 2.fxe7#
      • 1...d5
        • 2.Qxd5#
      • 1...Bc6
        • 2.Sxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • Q(h);OGATE,P_PINS(D),P_SPINQ(h),XP(G)::B(I),XQ(h)
    • Q(h);OGATE::B(I)+P(G)
    • Q(h);OGATE::B(I)+P(G),XQ(h)
  • Tries
    • Try
      • S(D);P_SPINP(G)
      • Threat
        • QAR1(C)
      • Vars
        • Q(h);CHECK,OGATE,P_SPINQ(h),XP(G)::B(I),XQ(h)
        • K(d);S_FLIGHT::QAR1(C)
        • Q(h);N_PINP(G),SBLOCK,XP(F)::QAB(C)
        • P(f);::QAR1(C),XP(f)
        • Q(h);N_PINP(G)::B(I)+P(G)
      • Refutation
        • B(i);
    • Try
      • Q(C);CHECK
      • Vars
        • K(d);OGATE,P-FLIGHT,XP(F)::QAR1(C),XP(f)
      • Refutation
        • K(d);P-FLIGHT
  • Actual
    • S(D);P_SPINP(G)
    • Threat
      • QAR1(C)
    • Vars
      • Q(h);CHECK,OGATE,P_SPINQ(h),XP(G)::B(I),XQ(h)
      • K(d);S_FLIGHT::QAR1(C)
      • Q(h);N_PINP(G),SBLOCK,XP(F)::QAB(C)
      • Q(h);N_PINP(G),XS(D)::B(I)+P(G),XQ(h)
      • P(f);::QAR1(C),XP(f)
      • B(i);N_GUARD::S(D),XB(i)
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).