MESON Chess Problem Database

Problem Display
PID: 255019 (1QN2b2/5P1r/K1P1k3/6Pp/2Rp3N/7n/B3b3/2n1R3 w - - 0 1)

Ellerman, Arnoldo

Western Morning News, 1921

(First published on Sat Sep 24 1921)

1QN2b2/5P1r/K1P1k3/6Pp/2Rp3N/7n/B3b3/2n1R3

#2

10 + 8

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sd3
      • 2.Rcc1#
      • 2.Rc2#
      • 2.Rc3#
      • 2.Ra4#
      • 2.Rb4#
      • 2.Rxd4#
      • 2.Rc5#
    • 1...d3
      • 2.Rcxc1#
      • 2.Re4#
  • Tries
    • 1.Rxe2+?
      • 1...Kd5
        • 2.Sb6#
        • 2.Re5#
        • 2.Rxc1#
        • 2.Qe5#
      • 1...Sxe2
        • 2.Rc1#
        • 2.Rc2#
        • 2.Rc3#
        • 2.Ra4#
        • 2.Rb4#
        • 2.Rxd4#
        • 2.Rc5#
      • 1...Kxf7!
    • 1.Qf4?
      • threat
        • 2.Qf5#
      • 1...Kd5
        • 2.Qf5#
      • 1...Rxf7
        • 2.Qe4#
      • 1...Sxf4!
    • 1.Qd6+?
      • 1...Kxf7
        • 2.Qg6#
      • 1...Bxd6!
  • Keys
    • 1.Qb1!
      • threat
        • 2.Qf5#
      • 1...Kd5
        • 2.Qf5#
      • 1...Ke5
        • 2.Qf5#
      • 1...Kxf7
        • 2.Qg6#
      • 1...Rxf7
        • 2.Qe4#
      • 1...Sd3
        • 2.Rc5#
      • 1...d3
        • 2.Re4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(A);CHECK,N_SPINR(C),XB(b)
      • Refutation
        • K(f);S_FLIGHT,XP(H)
    • Try
      • Q(I);
      • Threat
        • QAB1(I)
      • Vars
        • K(f);N_SPINB(b),S_FLIGHT::QAR2(I)
        • R(g);SBLOCK,XP(H)::QAR2(I)
      • Refutation
        • S(c);XQ(I)
    • Try
      • Q(I);CHECK
      • Vars
        • K(f);N_SPINB(b),OGATE,S_FLIGHT,XP(H)::QAB1(I)
      • Refutation
        • B(h);XQ(I)
  • Actual
    • Q(I);
    • Threat
      • QAB1(I)
    • Vars
      • K(f);N_SPINB(b),S_FLIGHT::QAR2(I)
      • K(f);P-FLIGHT::QAR1(I)
      • K(f);N_GUARD,N_SPINB(b),S_FLIGHT,XP(H)::QAB1(I)
      • R(g);SBLOCK,XP(H)::QAR2(I)
      • S(a);N_PINR(C)::B(B)+R(C)
      • P(d);N_PINR(C)::B(B)+R(C),DCHECK
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).