MESON Chess Problem Database

Problem Display
PID: 194982 (3R3Q/8/8/4P3/2p1kpP1/2B5/8/3NbK2 w - - 0 1)

Rosenblatt, Paul

The Times, 1918

3R3Q/8/8/4P3/2p1kpP1/2B5/8/3NbK2

#2

7 + 4

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...f3
      • 2.Rd4#
  • Tries
    • 1.Kxe1?
      • 1...f3
        • 2.Rd4#
      • 1...Kf3!
    • 1.Ke2?
      • threat
        • 2.Rd4#
        • 2.Qh7#
      • 1...Bxc3
        • 2.Sf2#
        • 2.Sxc3#
      • 1...Bf2
        • 2.Sxf2#
        • 2.Qh7#
      • 1...f3+!
    • 1.Qg8?
      • threat
        • 2.Qd5#
      • 1...f3
        • 2.Qxc4#
      • 1...Kf3!
  • Keys
    • 1.Rd3!
      • threat
        • 2.Qh7#
      • 1...Kxd3
        • 2.Qh7#
      • 1...Bxc3
        • 2.Sf2#
      • 1...cxd3
        • 2.Qa8#
      • 1...f3
        • 2.Rd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(d);SBLOCK::R1(F)
  • Tries
    • Try
      • K(B);P-FLIGHT,XB(a)
      • Vars
        • P(d);SBLOCK::R1(F)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • K(B);S_FLIGHT
      • Threat
        • DUALS(2)
      • Refutation
        • P(d);CHECK
    • Try
      • Q(G);
      • Threat
        • QAB1(G)
      • Vars
        • P(d);SBLOCK::QAR2(G),XP(b)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • R(F);
    • Threat
      • QAB(G)
    • Vars
      • K(c);S_FLIGHT,XR(F)::QAB(G)
      • B(a);N_GUARD,XB(C)::S(A)
      • P(b);SBLOCK,XR(F)::QAB(G)
      • P(d);SBLOCK::R1(F)
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).