MESON Chess Problem Database

Problem Display
PID: 193847 (8/pPKNp3/3p4/3k1P2/8/8/PQR1b3/3r2B1 w - - 0 1)

Saska, Istvan

Pesti Naplo, 1916

8/pPKNp3/3p4/3k1P2/8/8/PQR1b3/3r2B1

#2

8 + 6

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Qd4#
    • 1...Rb1
      • 2.Qd4#
    • 1...Rc1
      • 2.Qd4#
    • 1...Re1
      • 2.Qd4#
    • 1...Rf1
      • 2.Qd4#
    • 1...Rd4
      • 2.Qxd4#
    • 1...Bd3
      • 2.Qd4#
    • 1...e5
      • 2.Sf6#
    • 1...e6
      • 2.Sf6#
  • Tries
    • 1.Qb3+?
      • 1...Bc4
        • 2.Qxc4#
        • 2.Qf3#
      • 1...Ke4!
  • Keys
    • 1.Rc4!
      • threat
        • 2.Qb5#
      • 1...Kxc4
        • 2.Qb3#
      • 1...Bxc4
        • 2.Qg2#
      • 1...Rd4
        • 2.Rxd4#
        • 2.Qxd4#
      • 1...Rb1
        • 2.Rd4#
        • 2.Qd4#
      • 1...a6
        • 2.Sb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 9
  • Sets
    • R(a);N_GUARD::QAR1(C)
    • R(a);N_GUARD,P_PINR(D)::QAR1(C)
    • R(a);N_GUARD::QAR1(C),XR(a)
    • B(b);S_CUTR(a)::QAR1(C)
    • P(f);N_GUARD::S(H)
  • Tries
    • Try
      • Q(C);CHECK
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • R(D);
    • Threat
      • QAR2(C)
    • Vars
      • K(c);OGATEB,S_FLIGHT,XR(D)::QAB1(C)
      • B(b);OGATE,SBLOCK,XR(D)::QAB(C)
      • P(e);N_GUARD::S(H)
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).