MESON Chess Problem Database

Problem Display
PID: 96389 (r1Q2n2/pBB4b/2PK1p2/5N1R/4kp2/7r/2PpP3/3Nb3 w - - 0 1)

Ernest, D

The Chess Problem, 1946

r1Q2n2/pBB4b/2PK1p2/5N1R/4kp2/7r/2PpP3/3Nb3

#2

10 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rh1
      • 2.Sc3#
    • 1...Rh2
      • 2.Sc3#
    • 1...Rc3
      • 2.Sxc3#
    • 1...Rd3+
      • 2.cxd3#
    • 1...Rh4
      • 2.Sc3#
    • 1...Rxh5
      • 2.Sc3#
    • 1...Bf2
      • 2.Sxf2#
    • 1...Bg3
      • 2.Sc3#
    • 1...Se6
      • 2.Qxe6#
    • 1...Sd7
      • 2.cxd7#
  • Tries
    • 1.Qe8+?
      • 1...Se6
        • 2.Qxe6#
      • 1...Rxe8!
  • Keys
    • 1.Kc5!
      • threat
        • 2.Sd6#
      • 1...Rc3+
        • 2.Sxc3#
      • 1...Bf2+
        • 2.Sxf2#
      • 1...Se6+
        • 2.Qxe6#
      • 1...Sd7+
        • 2.cxd7#
      • 1...Rxh5
        • 2.Sc3#
      • 1...Bxf5
        • 2.Qxf5#
      • 1...Rd3
        • 2.cxd3#
      • 1...f3
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • R(c);N_GUARD::S(A)
    • R(c);N_GUARD::S(A),XR(c)
    • R(c);CHECK,OGATE::P(B),XR(c)
    • R(c);N_GUARD,XR(E)::S(A)
    • B(a);N_GUARD::S(A),XB(a)
    • B(a);S_CUTR(c)::S(A)
    • S(j);N_GUARD::QAR2(J),XS(j)
    • S(j);OGATE::B(H)+P(F),XS(j)
  • Tries
    • Try
      • Q(J);CHECK
      • Vars
        • S(j);N_GUARD,P_SPINS(j)::QAR2(J),XS(j)
      • Refutation
        • R(i);XQ(J)
  • Actual
    • K(G);S_FLIGHT
    • Threat
      • S(D)
    • Vars
      • R(c);CHECK,N_GUARD::S(A),XR(c)
      • B(a);CHECK,N_GUARD::S(A),XB(a)
      • S(j);CHECK,N_GUARD::QAR2(J),XS(j)
      • S(j);CHECK,OGATE::B(H)+P(F),XS(j)
      • R(c);N_GUARD,P_PINS(D),XR(E)::S(A)
      • B(h);OGATE,XS(D)::QAB1(J),XB(h)
      • R(c);OGATE::P(B),XR(c)
      • P(e);S_CUTR(c)::S(A)
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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).