MESON Chess Problem Database

Problem Display
PID: 110122 (3R4/8/5ppB/K2N2rb/1P2P3/prpB1P2/Nb1kP1R1/6Q1 w - - 0 1)

Kubbel, Leonid Ivanovich (AKA Kubbel, Karl Artur Leonid)

Kagans Neueste Schachnachrichten, 1928

3R4/8/5ppB/K2N2rb/1P2P3/prpB1P2/Nb1kP1R1/6Q1

#2

12 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ba1
      • 2.Qc1#
    • 1...Bc1
      • 2.Qxc1#
  • Tries
    • 1.Rxg5?
      • threat
        • 2.Rxg6#
      • 1...fxg5
        • 2.Bxg5#
      • 1...f5!
    • 1.e3+?
      • 1...Kxd3
        • 2.Qf1#
      • 1...Rxg2!
  • Keys
    • 1.Bb5!
      • 1...Kc2
        • 2.Se3#
      • 1...Rxb4
        • 2.Sdxb4#
      • 1...Bxf3
        • 2.exf3#
      • 1...Ba1
        • 2.Qc1#
      • 1...Bc1
        • 2.Qxc1#
      • 1...Bg4
        • 2.e3#
      • 1...c2
        • 2.Sdc3#
      • 1...f5
        • 2.Se3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • B(a);N_GUARD::QAB1(A)
    • B(a);N_GUARD::QAB1(A),XB(a)
  • Tries
    • Try
      • R(D);N_SPINS(J),XR(f)
      • Threat
        • B(K)+R(D),XP(i)
      • Vars
        • P(h);OGATE,P_SPINP(h),XR(D)::B(K),XP(h)
      • Refutation
        • P(h);
    • Try
      • P(C);CHECK,N_PINR(f)
      • Vars
        • K(b);P-FLIGHT,XB(E)::QAB(A)
      • Refutation
        • R(f);N_PINS(J),XR(D)
  • Actual
    • B(E);N_SPINS(J)
    • Vars
      • K(b);N_SPINR(f),P-FLIGHT::S(J)
      • R(d);XP(G)::R(L)+S(J),XR(d)
      • B(g);OGATE,XP(F)::R(D)+P(C),XB(g)
      • B(a);N_GUARD::QAB1(A)
      • B(a);N_GUARD::QAB1(A),XB(a)
      • B(g);::R(D)+P(C)
      • P(e);SBLOCK::R(L)+S(J)
      • P(h);::R(L)+S(J)
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).