MESON Chess Problem Database

Problem Display
PID: 231655 (8/8/8/8/2b3B1/3p1n2/2kPRQ2/KR6 w - - 0 1)

Klein, Miklos

Ujsag, 1927

8/8/8/8/2b3B1/3p1n2/2kPRQ2/KR6

#2

6 + 4

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Rb2+?
      • 1...Kd1
        • 2.Re1#
      • 1...Kc1!
    • 1.Qd4?
      • threat
        • 2.Qb2#
        • 2.Qc3#
        • 2.Qxc4#
      • 1...Sxd2
        • 2.Qb2#
        • 2.Qxc4#
      • 1...dxe2
        • 2.Qc3#
      • 1...Ba2
        • 2.Qb2#
        • 2.Qc3#
      • 1...Bb3
        • 2.Qb2#
        • 2.Qc3#
      • 1...Bb5
        • 2.Qb2#
        • 2.Qc3#
      • 1...Bd5
        • 2.Qb2#
        • 2.Qc3#
      • 1...Ba6
        • 2.Qb2#
        • 2.Qc3#
        • 2.Qa4#
      • 1...Be6
        • 2.Qb2#
        • 2.Qc3#
      • 1...Bf7
        • 2.Qb2#
        • 2.Qc3#
      • 1...Bg8
        • 2.Qb2#
        • 2.Qc3#
      • 1...Se5
        • 2.Qb2#
        • 2.Qc3#
      • 1...Sxd4!
  • Keys
    • 1.Ree1!
      • threat
        • 2.Rb2#
        • 2.Rec1#
      • 1...Sxe1
        • 2.Bd1#
      • 1...Sxd2
        • 2.Rec1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);CHECK
      • Vars
        • K(a);S_FLIGHT::R1(D)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(E);
      • Threat
        • DUALS(3)
      • Vars
        • P(b);XR(D)::QAR1(E)
      • Refutation
        • S(c);XQ(E)
  • Actual
    • R(D);
    • Threat
      • DUALS(2)
    • Vars
      • S(c);OGATE,XR(D)::B(F)
      • S(c);P_SPINS(c),XP(C)::R1(D)
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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).