MESON Chess Problem Database

Problem Display
PID: 214712 (1N1r4/p2p2Q1/3b4/B3R3/3k1p2/8/KN4B1/8 w - - 0 1)

King, JF

Detroit Free Press, 1878

1N1r4/p2p2Q1/3b4/B3R3/3k1p2/8/KN4B1/8

#2

7 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bc5
      • 2.Re1#
      • 2.Re2#
      • 2.Re6#
      • 2.Re7#
      • 2.Re8#
  • Tries
    • 1.Re1+?
      • 1...Be5
        • 2.Qxe5#
      • 1...Kc5!
    • 1.Re2+?
      • 1...Be5
        • 2.Qxe5#
      • 1...Kc5!
    • 1.Re4+?
      • 1...Kd5
        • 2.Qd4#
      • 1...Kc5!
    • 1.Rb5+?
      • 1...Be5
        • 2.Qxe5#
      • 1...Ke3!
    • 1.Rf5+?
      • 1...Be5
        • 2.Qxe5#
      • 1...Ke3!
    • 1.Rg5+?
      • 1...Be5
        • 2.Qxe5#
      • 1...Ke3!
    • 1.Rh5+?
      • 1...Be5
        • 2.Qxe5#
      • 1...Ke3!
    • 1.Re6+?
      • 1...Be5
        • 2.Qxe5#
      • 1...Kc5!
    • 1.Re7+?
      • 1...Be5
        • 2.Qxe5#
      • 1...Kc5!
    • 1.Re8+?
      • 1...Be5
        • 2.Qxe5#
      • 1...Kc5!
  • Keys
    • 1.Qxd7!
      • threat
        • 2.Sc6#
      • 1...Kxe5
        • 2.Bc3#
      • 1...Rxb8
        • 2.Qxd6#
      • 1...Rc8
        • 2.Qxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(E);CHECK
      • Vars
        • B(c);N_GUARD,P_SPINB(c)::QAB1(F),XB(c)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(E);CHECK
      • Vars
        • B(c);N_GUARD,P_SPINB(c)::QAB1(F),XB(c)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(E);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(E);CHECK
      • Vars
        • B(c);N_GUARD,P_SPINB(c)::QAB1(F),XB(c)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(E);CHECK
      • Vars
        • B(c);N_GUARD,P_SPINB(c)::QAB1(F),XB(c)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(E);CHECK
      • Vars
        • B(c);N_GUARD,P_SPINB(c)::QAB1(F),XB(c)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(E);CHECK
      • Vars
        • B(c);N_GUARD,P_SPINB(c)::QAB1(F),XB(c)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(E);CHECK
      • Vars
        • B(c);N_GUARD,P_SPINB(c)::QAB1(F),XB(c)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(E);CHECK
      • Vars
        • B(c);N_GUARD,P_SPINB(c)::QAB1(F),XB(c)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(E);CHECK
      • Vars
        • B(c);N_GUARD,P_SPINB(c)::QAB1(F),XB(c)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(F);P_PINB(c),XP(e)
    • Threat
      • S(G)
    • Vars
      • K(a);N_SPINB(c),S_FLIGHT,XR(E)::B(D)
      • R(f);N_GUARD,XS(G)::QAR2(F),XB(c)
      • R(f);N_GUARD::QAR2(F),XB(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).