MESON Chess Problem Database

Problem Display
PID: 271176 (5B2/1p2p3/1pP3K1/1Pk2NNR/Pp1p4/1n1r4/2b3Qb/4RB2 w - - 0 1)

Froberg, Johan Hilding Laurentius

Schackvarlden, 1935

5B2/1p2p3/1pP3K1/1Pk2NNR/Pp1p4/1n1r4/2b3Qb/4RB2

#2

11 + 10

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Rd1
      • 2.Se6#
    • 1...Rd2
      • 2.Se6#
    • 1...Rc3
      • 2.Se6#
    • 1...Rg3
      • 2.Bxe7#
      • 2.Re5#
    • 1...Rh3
      • 2.Se6#
    • 1...bxc6
      • 2.Qxc6#
  • Tries
    • 1.Re5+?
      • 1...Kc4
        • 2.Qxc2#
      • 1...Bxe5!
  • Keys
    • 1.Sxe7!
      • threat
        • 2.Qd5#
      • 1...Rd1+
        • 2.Se4#
      • 1...Rd2+
        • 2.Se4#
      • 1...Rc3+
        • 2.Se4#
      • 1...Re3+
        • 2.Se4#
      • 1...Rf3+
        • 2.Se4#
      • 1...Rg3+
        • 2.Sf5#
      • 1...Rh3+
        • 2.Se4#
      • 1...Kc4
        • 2.Qxc2#
      • 1...Kd6
        • 2.Sd5#
      • 1...bxc6
        • 2.Qxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • R(d);P_PINS(F)::S(G)
    • P(i);OGATE,XP(I)::QAR1(C),XP(i)
  • Tries
    • Try
      • R(A);CHECK
      • Vars
        • K(g);N_SPINP(j),P-FLIGHT,P_SPINR(d)::QAR2(C),XB(a)
      • Refutation
        • B(b);XR(A)
  • Actual
    • S(F);XP(j)
    • Threat
      • QAR1(C)
    • Vars
      • R(d);CHECK::R(H)+S(G),DCHECK
      • R(d);CHECK,P_PINS(G),S_CUTB(b)::B(K)+S(F)
      • K(g);N_GUARD,P-FLIGHT,P_SPINR(d)::QAR2(C),XB(a)
      • K(g);N_GUARD,S_CUTB(b),S_FLIGHT::B(K)+S(F)
      • P(i);OGATE,XP(I)::QAR1(C),XP(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).