MESON Chess Problem Database

Problem Display
PID: 222685 (R7/4b2Q/K2kNN2/1Pp1q1n1/2P5/8/7B/8 w - - 0 1)

Nageleisen, Henry

Cincinnati Commercial, 1883

R7/4b2Q/K2kNN2/1Pp1q1n1/2P5/8/7B/8

#2

8 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bd8
      • 2.Qd7#
    • 1...Bf8
      • 2.Qd7#
  • Tries
    • 1.Sxg5?
      • 1...Kc7
        • 2.Bxe5#
        • 2.Qxe7#
      • 1...Qxh2
        • 2.Qxh2#
      • 1...Qg3
        • 2.Bxg3#
      • 1...Qf4
        • 2.Bxf4#
      • 1...Bd8
        • 2.Sfe4#
        • 2.Se8#
        • 2.Rxd8#
        • 2.Qd7#
      • 1...Bf8
        • 2.Sfe4#
        • 2.Se8#
        • 2.Rd8#
        • 2.Qd7#
      • 1...Bxf6!
    • 1.Se8+?
      • 1...Kd7
        • 2.Sf8#
      • 1...Kxe6!
    • 1.Rd8+?
      • 1...Bxd8
        • 2.Qd7#
      • 1...Kxe6!
  • Keys
    • 1.Sf8!
      • threat
        • 2.Se8#
      • 1...Kc7
        • 2.Se8#
        • 2.Bxe5#
        • 2.Qxe7#
      • 1...Qxh2
        • 2.Qxh2#
      • 1...Bxf6
        • 2.Qd7#
      • 1...Bxf8
        • 2.Qd7#
      • 1...Qg3
        • 2.Bxg3#
      • 1...Qf4
        • 2.Bxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • B(e);OGATE::QAR1(G)
  • Tries
    • Try
      • S(E);XS(c)
      • Vars
        • Q(b);N_SPINQ(b),OGATE,XB(A)::QAB(G),XQ(b)
        • Q(b);OGATEB::B(A),XQ(b)
      • Refutation
        • B(e);XS(F)
    • Try
      • S(F);CHECK
      • Vars
        • K(d);N_SPINQ(b),P-FLIGHT,P_SPINB(e)::S(E)
      • Refutation
        • K(d);N_SPINQ(b),P-FLIGHT,XS(E)
    • Try
      • R(H);CHECK
      • Vars
        • B(e);OGATE,XR(H)::QAR1(G)
      • Refutation
        • K(d);N_SPINQ(b),P-FLIGHT,XS(E)
  • Actual
    • S(E);
    • Threat
      • S(F)
    • Vars
      • Q(b);N_SPINQ(b),OGATE,XB(A)::QAB(G),XQ(b)
      • B(e);OGATE,XS(F)::QAR1(G)
      • B(e);OGATE,XS(E)::QAR1(G)
      • Q(b);OGATEB::B(A),XQ(b)
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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).