MESON Chess Problem Database

Problem Display
PID: 141046 (B7/2RPrrp1/5bK1/3N2p1/1p1k4/7N/2P4Q/8 w - - 0 1)

Bowell, Gerald P

The Problemist, 1943

B7/2RPrrp1/5bK1/3N2p1/1p1k4/7N/2P4Q/8

#2

8 + 7

SOLUTION

  • SOUND
  • Tries
    • 1.Qg1+?
      • 1...Ke4
        • 2.Qe3#
      • 1...Re3
        • 2.Qxe3#
      • 1...Ke5!
    • 1.Qd2+?
      • 1...Ke4
        • 2.Qe3#
      • 1...Ke5!
    • 1.Qf2+?
      • 1...Ke4
        • 2.Qe3#
      • 1...Re3
        • 2.Qxe3#
      • 1...Ke5!
  • Keys
    • 1.Se3!
      • threat
        • 2.Sf5#
      • 1...Kxe3
        • 2.Qf2#
      • 1...Rxe3
        • 2.Qd6#
      • 1...Re5
        • 2.Qd2#
      • 1...Be5
        • 2.Qd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(B)
        • R(e);N_GUARD,P_SPINR(e)::QAB1(B),XR(e)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(B)
        • R(e);N_GUARD,P_SPINR(e)::QAB1(B),XR(e)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • K(b);OGATEB,S_FLIGHT,XS(D)::QAB1(B)
      • R(e);SBLOCK,XS(D)::QAR2(B)
      • R(e);SBLOCK::QAR2(B)
      • B(d);SBLOCK::QAR2(B)
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).