MESON Chess Problem Database

Problem Display
PID: 189881 (1NrQ4/1pp2p2/3Rb3/p1kpB1b1/K2p4/1P6/8/8 w - - 0 1)

Ehrmann, Mano

Pesti Naplo, 1912

1NrQ4/1pp2p2/3Rb3/p1kpB1b1/K2p4/1P6/8/8

#2

6 + 10

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rxb8
      • 2.Qxc7#
    • 1...Bd7+
      • 2.Sxd7#
    • 1...b6
      • 2.Sa6#
      • 2.Rc6#
    • 1...cxd6
      • 2.Bxd6#
      • 2.Qxd6#
  • Tries
    • 1.Rxd5+?
      • 1...Kb6
        • 2.Bxd4#
      • 1...Bxd5!
    • 1.Qd7?
      • threat
        • 2.Qb5#
      • 1...Bxd7+
        • 2.Sxd7#
      • 1...b5+
        • 2.Qxb5#
      • 1...c6!
  • Keys
    • 1.Rb6!
      • threat
        • 2.Rb5#
      • 1...Bd7+
        • 2.Sxd7#
      • 1...Kxb6
        • 2.Bxd4#
      • 1...Rxb8
        • 2.Qxc7#
      • 1...cxb6
        • 2.Bd6#
        • 2.Qd6#
      • 1...c6
        • 2.Bd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(j);N_GUARD,XS(E)::QAR2(F),XP(h)
    • B(f);CHECK,N_GUARD::S(E),XB(f)
  • Tries
    • Try
      • R(D);CHECK,XP(d)
      • Vars
        • K(c);P_SPINP(h),S_FLIGHT::B(C),XP(a)
      • Refutation
        • B(f);XR(D)
    • Try
      • Q(F);
      • Threat
        • QAR1(F)
      • Vars
        • B(f);CHECK,XQ(F)::S(E),XB(f)
        • P(g);CHECK::QAR1(F),XP(g)
      • Refutation
        • P(h);
  • Actual
    • R(D);
    • Threat
      • R1(D)
    • Vars
      • B(f);CHECK,N_GUARD::S(E),XB(f)
      • K(c);P_SPINP(h),S_FLIGHT,XR(D)::B(C),XP(a)
      • R(j);N_GUARD,XS(E)::QAR2(F),XP(h)
      • P(h);N_GUARD::B(C)
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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).