MESON Chess Problem Database

Problem Display
PID: 206245 (2RN4/1P6/qp2pQP1/p3r1r1/2pkB3/3P1Rpb/1P6/4K3 w - - 0 1)

Ellerman, Arnoldo

Brisbane Courier, 1933

2RN4/1P6/qp2pQP1/p3r1r1/2pkB3/3P1Rpb/1P6/4K3

#2

10 + 10

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qxb7
      • 2.Rxc4#
    • 1...Qa7
      • 2.Rxc4#
    • 1...Qa8
      • 2.Rxc4#
    • 1...Rg4
      • 2.Sxe6#
    • 1...Rf5
      • 2.Sxe6#
    • 1...Bf1
      • 2.Sxe6#
    • 1...Bg2
      • 2.Sxe6#
    • 1...c3
      • 2.bxc3#
  • Keys
    • 1.Qf4!
      • threat
        • 2.Qe3#
      • 1...Rxe4+
        • 2.Qxe4#
      • 1...Rb5
        • 2.Rxc4#
      • 1...Rc5
        • 2.Bc6#
      • 1...Rd5
        • 2.Bf5#
      • 1...Ref5
        • 2.Sxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 8
  • Sets
    • Q(h);N_GUARD,XP(H)::R1(I),XP(c)
    • Q(h);N_GUARD::R1(I),XP(c)
    • R(g);S_CUTB(b)::S(J),XP(j)
    • B(b);N_GUARD::S(J),XP(j)
    • P(c);::P(B),XP(c)
  • Actual
    • Q(F);N_PINR(f)
    • Threat
      • QAB1(F)
    • Vars
      • R(f);CHECK,OGATE,P_SPINR(f),XB(E)::QAR1(F),XR(f)
      • R(f);N_PINB(E),S_CUTQ(h)::R1(I),XP(c)
      • R(f);N_PINB(E),SBLOCK::QAR(F)+B(E)
      • R(f);N_GUARD,N_PINB(E),S_CUTB(b)::S(J),XP(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).