MESON Chess Problem Database

Problem Display
PID: 218167 (7R/5p2/Q1B2K2/8/3k4/P4nB1/3b4/N2R4 w - - 0 1)

Obermann, Johannes Hugo Wilhelm

Deutsche Schachzeitung, 1874

7R/5p2/Q1B2K2/8/3k4/P4nB1/3b4/N2R4

#2

8 + 4

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ke3
      • 2.Sc2#
    • 1...Kc5
      • 2.Sb3#
  • Tries
    • 1.Sc2+?
      • 1...Kc5
        • 2.Qb5#
      • 1...Kc3!
    • 1.Bxf3?
      • 1...Kc3
        • 2.Be5#
      • 1...Kc5
        • 2.Sb3#
      • 1...Ke3!
    • 1.Rxd2+?
      • 1...Kc3
        • 2.Qd3#
      • 1...Ke3
        • 2.Qe2#
        • 2.Qd3#
      • 1...Kc5
        • 2.Sb3#
        • 2.Bd6#
        • 2.Rd5#
        • 2.Qb5#
      • 1...Sxd2!
    • 1.Rd8+?
      • 1...Ke3
        • 2.Sc2#
        • 2.Qd3#
      • 1...Kc5
        • 2.Sb3#
        • 2.Rd5#
        • 2.Qb5#
      • 1...Kc3!
    • 1.Qc4+?
      • 1...Ke3
        • 2.Sc2#
        • 2.Qe4#
      • 1...Kxc4!
  • Keys
    • 1.Rh3!
      • 1...Kc3
        • 2.Be5#
      • 1...Ke3
        • 2.Sc2#
      • 1...Kc5
        • 2.Sb3#
      • 1...Se1
        • 2.Bf2#
      • 1...Sg1
        • 2.Bf2#
      • 1...Sh2
        • 2.Bf2#
      • 1...Sh4
        • 2.Bf2#
      • 1...Se5
        • 2.Bf2#
      • 1...Sg5
        • 2.Bf2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • K(c);N_SPINB(a),S_FLIGHT::S(A)
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • K(c);N_SPINB(a),S_FLIGHT::QAR1(E)
      • Refutation
        • K(c);N_SPINB(a),S_FLIGHT
    • Try
      • B(F);XS(b)
      • Vars
        • K(c);N_SPINB(a),S_FLIGHT::B(D)
        • K(c);N_SPINB(a),S_FLIGHT::S(A)
      • Refutation
        • K(c);N_SPINB(a),S_FLIGHT
    • Try
      • R(B);CHECK,XB(a)
      • Vars
        • K(c);S_FLIGHT::QAR1(E)
      • Refutation
        • S(b);XR(B)
    • Try
      • R(H);CHECK
      • Refutation
        • K(c);N_SPINB(a),S_FLIGHT
    • Try
      • Q(E);CHECK
      • Refutation
        • K(c);N_SPINB(a),P-FLIGHT,XQ(E)
  • Actual
    • R(H);
    • Vars
      • K(c);N_SPINB(a),S_FLIGHT::B(D)
      • K(c);N_SPINB(a),S_FLIGHT::S(A)
      • S(b);::B(D)
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).