MESON Chess Problem Database

Problem Display
PID: 229002 (2R2B2/8/8/3k4/3br1P1/5Q2/K7/8 w - - 0 1)

Svedberg, Erik Daniel

Schackvarlden, 1926

2R2B2/8/8/3k4/3br1P1/5Q2/K7/8

#2

5 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Qf5#
    • 1...Ke6
      • 2.Qf5#
  • Tries
    • 1.Rc5+?
      • 1...Ke6
        • 2.Qf5#
      • 1...Bxc5!
    • 1.Rd8+?
      • 1...Kc4
        • 2.Qb3#
      • 1...Ke5
        • 2.Qf5#
      • 1...Ke6
        • 2.Qf5#
      • 1...Kc6!
    • 1.Qf7+?
      • 1...Ke5
        • 2.Re8#
        • 2.Qf5#
      • 1...Re6!
  • Keys
    • 1.Rc4!
      • 1...Kxc4
        • 2.Qb3#
      • 1...Ke5
        • 2.Qf5#
      • 1...Ke6
        • 2.Qf5#
      • 1...Bc5
        • 2.Qxe4#
      • 1...Ba1
        • 2.Qxe4#
      • 1...Bg1
        • 2.Qxe4#
      • 1...Bb2
        • 2.Qxe4#
      • 1...Bf2
        • 2.Qxe4#
      • 1...Bc3
        • 2.Qxe4#
      • 1...Be3
        • 2.Qxe4#
      • 1...Be5
        • 2.Qf7#
      • 1...Bb6
        • 2.Qxe4#
      • 1...Bf6
        • 2.Qxe4#
      • 1...Ba7
        • 2.Qxe4#
      • 1...Bg7
        • 2.Qxe4#
      • 1...Bh8
        • 2.Qxe4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 14
    • REMOVED MATES = 0
  • Sets
    • K(c);N_SPINR(b),P-FLIGHT::QAR1(B)
    • K(c);N_SPINR(b),S_FLIGHT::QAB1(B)
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • K(c);N_SPINR(b),S_FLIGHT::QAB1(B)
      • Refutation
        • B(a);XR(D)
    • Try
      • R(D);CHECK
      • Vars
        • K(c);N_SPINR(b),S_FLIGHT::QAB1(B)
        • K(c);N_SPINR(b),P-FLIGHT::QAR1(B)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(B);CHECK,N_PINR(b)
      • Refutation
        • R(b);P_SPINR(b)
  • Actual
    • R(D);
    • Vars
      • K(c);N_SPINR(b),OGATEB,S_FLIGHT,XR(D)::QAB1(B)
      • K(c);N_SPINR(b),P-FLIGHT::QAR1(B)
      • K(c);N_SPINR(b),S_FLIGHT::QAB1(B)
      • B(a);::QAB1(B),XR(b)
      • B(a);SBLOCK::QAB(B)
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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).