MESON Chess Problem Database

Problem Display
PID: 163132 (2Q5/8/r2k1P2/bP6/N3K3/8/8/8 w - - 0 1)

Valtonen, Kari

Tehtavaniekka, 2017

2Q5/8/r2k1P2/bP6/N3K3/8/8/8

#2

5 + 3

5454 Near Snap 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Rc6
      • 2.Qxc6#
    • 1...Ra7
      • 2.Qc6#
    • 1...Ra8
      • 2.Qc6#
    • 1...Bb6
      • 2.Qc6#
  • Tries
    • 1.Sb2?
      • threat
        • 2.Sc4#
      • 1...Rc6
        • 2.Qxc6#
      • 1...Bc7!
    • 1.Sc5?
      • threat
        • 2.Sb7#
      • 1...Ra7
        • 2.Qc6#
      • 1...Rb6!
    • 1.Sb6?
      • threat
        • 2.Sc4#
        • 2.Qc6#
      • 1...Bxb6
        • 2.Qc6#
      • 1...Rxb6!
    • 1.Qb7?
      • threat
        • 2.Qe7#
      • 1...Ke6
        • 2.Qe7#
      • 1...Bc7
        • 2.Qd5#
      • 1...Ra7
        • 2.Qc6#
      • 1...Bd8!
    • 1.Qc5+?
      • 1...Ke6
        • 2.Qe7#
      • 1...Kd7!
    • 1.Qd8+?
      • 1...Ke6
        • 2.Qe7#
      • 1...Bxd8!
  • Keys
    • 1.Kf5!
      • 1...Kd5
        • 2.Qc5#
      • 1...Rb6
        • 2.Qd8#
      • 1...Rc6
        • 2.Qxc6#
      • 1...Ra7
        • 2.Qc6#
      • 1...Ra8
        • 2.Qc6#
      • 1...Be1
        • 2.Qd8#
      • 1...Bd2
        • 2.Qd8#
      • 1...Bc3
        • 2.Qd8#
      • 1...Bb4
        • 2.Qd8#
      • 1...Bb6
        • 2.Qc6#
      • 1...Bc7
        • 2.Qe6#
      • 1...Bd8
        • 2.Qxd8#

Anticipated by 1056(1999)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • R(b);N_GUARD::QAR1(E),XR(b)
    • R(b);N_GUARD::QAR1(E)
    • B(a);S_CUTR(b)::QAR1(E)
  • Tries
    • Try
      • S(A);
      • Threat
        • S(A)
      • Vars
        • R(b);N_GUARD::QAR1(E),XR(b)
      • Refutation
        • B(a);
    • Try
      • S(A);
      • Threat
        • S(A)
      • Vars
        • R(b);N_GUARD::QAR1(E)
      • Refutation
        • R(b);
    • Try
      • S(A);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);XS(A)::QAR1(E)
      • Refutation
        • R(b);XS(A)
    • Try
      • Q(E);
      • Threat
        • QAB1(E)
      • Vars
        • K(c);P-FLIGHT::QAR1(E)
        • B(a);SBLOCK::QAR1(E)
        • R(b);N_GUARD::QAR1(E)
      • Refutation
        • B(a);
    • Try
      • Q(E);CHECK
      • Vars
        • K(c);OGATE,P-FLIGHT::QAR1(E)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR1(E)
      • Refutation
        • B(a);XQ(E)
  • Actual
    • K(B);S_FLIGHT
    • Vars
      • K(c);P-FLIGHT::QAR1(E)
      • R(b);S_CUTB(a)::QAR2(E)
      • R(b);N_GUARD::QAR1(E),XR(b)
      • R(b);N_GUARD::QAR1(E)
      • B(a);N_GUARD::QAR2(E)
      • B(a);S_CUTR(b)::QAR1(E)
      • B(a);SBLOCK::QAR1(E)
      • B(a);N_GUARD::QAR2(E),XB(a)
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).