MESON Chess Problem Database

Problem Display
PID: 203387 (8/N7/8/p1pr1p2/pk2b2Q/1q4pK/1RR3p1/1N4B1 w - - 0 1)

Takacs, Peter

1st Comm., Grantham Journal, 1924

8/N7/8/p1pr1p2/pk2b2Q/1q4pK/1RR3p1/1N4B1

#2

7 + 10

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rd1
      • 2.Bxc5#
    • 1...Rd2
      • 2.Bxc5#
    • 1...Rd3
      • 2.Bxc5#
    • 1...Rd6
      • 2.Bxc5#
    • 1...Rd7
      • 2.Bxc5#
    • 1...Rd8
      • 2.Bxc5#
  • Tries
    • 1.Qf6?
      • threat
        • 2.Qc3#
        • 2.Qb6#
      • 1...Qxb2
        • 2.Qxb2#
        • 2.Qb6#
      • 1...Bxc2
        • 2.Qc3#
      • 1...Rd3
        • 2.Bxc5#
        • 2.Qb6#
      • 1...Rd4
        • 2.Qb6#
      • 1...Re5
        • 2.Qb6#
      • 1...Rd6
        • 2.Bxc5#
        • 2.Qc3#
      • 1...Bd3
        • 2.Qc3#
      • 1...c4
        • 2.Qc3#
      • 1...a3!
    • 1.Qxe4+?
      • 1...Rd4
        • 2.Qb7#
      • 1...c4
        • 2.Rxc4#
        • 2.Qxc4#
      • 1...fxe4!
  • Keys
    • 1.Qxg3!
      • threat
        • 2.Qc3#
      • 1...Qxb2
        • 2.Qb8#
      • 1...a3
        • 2.Qxb3#
      • 1...Rd3
        • 2.Bxc5#
      • 1...Bd3
        • 2.Qe1#
      • 1...Bf3
        • 2.Qb8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • R(i);N_GUARD::B(B),XP(h)
  • Tries
    • Try
      • Q(F);N_PINB(f)
      • Threat
        • DUALS(2)
      • Vars
        • B(f);XR(D)::QAB1(F)
        • R(i);::QAR2(F)
        • B(f);::QAB1(F)
        • P(h);::QAB1(F)
      • Refutation
        • P(d);
    • Try
      • Q(F);CHECK,XB(f)
      • Vars
        • R(i);OGATE,P_SPINR(i)::QAR(F)
      • Refutation
        • P(j);XQ(F)
  • Actual
    • Q(F);N_PINB(f),P_SPINQ(F),XP(c)
    • Threat
      • QAB1(F)
    • Vars
      • Q(b);N_PINQ(F),N_SPINQ(b),XR(C)::QAR(F)
      • P(d);N_GUARD::QAR1(F),XQ(b)
      • R(i);N_GUARD::B(B),XP(h)
      • B(f);N_PINQ(F)::QAB(F)
      • B(f);N_PINQ(F)::QAR(F)
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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).