MESON Chess Problem Database

Problem Display
PID: 261603 (1n4n1/4bB2/Q1r5/3N2p1/pR1Pk1P1/2B1p1Pr/2b5/K4R2 w - - 0 1)

Stooss, Walter

Neue Zurcher Zeitung, 1914

1n4n1/4bB2/Q1r5/3N2p1/pR1Pk1P1/2B1p1Pr/2b5/K4R2

#2

10 + 10

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc3
      • 2.Sxc3#
      • 2.Qg6#
    • 1...Rc4
      • 2.Qg6#
    • 1...Rc5
      • 2.Qg6#
      • 2.dxc5#
    • 1...Rg6
      • 2.Qxg6#
    • 1...Rc7
      • 2.Qg6#
    • 1...Rc8
      • 2.Qg6#
    • 1...Bc5
      • 2.dxc5#
    • 1...e2
      • 2.Qxe2#
  • Tries
    • 1.Qe2?
      • threat
        • 2.Qxc2#
        • 2.Qxe3#
      • 1...Rxg3
        • 2.Qxc2#
      • 1...Rxc3
        • 2.Sxc3#
      • 1...Rh2
        • 2.Qxe3#
      • 1...Bb1
        • 2.Qxe3#
      • 1...Bd1
        • 2.Qxe3#
      • 1...Bb3
        • 2.Qxe3#
      • 1...Bd3
        • 2.Qf3#
        • 2.Qg2#
        • 2.Qxe3#
      • 1...Re6!
  • Keys
    • 1.Sf4!
      • threat
        • 2.Bd5#
      • 1...gxf4
        • 2.Rxf4#
      • 1...e2
        • 2.Qxe2#
      • 1...Rc5
        • 2.dxc5#
      • 1...Rd6
        • 2.d5#
      • 1...Re6
        • 2.Qxe6#
      • 1...Bb3
        • 2.Qd3#
      • 1...Sf6
        • 2.Bg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 5
  • Sets
    • R(g);OGATE::QAB(I)
    • R(g);OGATE::QAB(I),XR(g)
    • B(h);OGATE::R(E)+P(F),XB(h)
    • P(b);OGATEB::QAR2(I),XP(b)
  • Tries
    • Try
      • Q(I);P_PINP(b)
      • Threat
        • DUALS(2)
      • Vars
        • R(c);XP(D)::QAB(I),XB(a)
        • R(g);XB(C)::S(H),XR(g)
        • R(c);::QAR1(I),XP(b)
        • B(a);::QAR1(I),XP(b)
      • Refutation
        • R(g);
  • Actual
    • S(H);
    • Threat
      • B(J)
    • Vars
      • P(f);OGATE,XS(H)::R1(B),XP(f)
      • P(b);OGATEB::QAR2(I),XP(b)
      • R(g);OGATE::R(E)+P(F),XR(g)
      • R(g);N_GUARD,S_CUTB(h)::R(E)+P(F)
      • R(g);OGATE::QAR2(I),XR(g)
      • B(a);N_GUARD::QAB1(I)
      • S(j);S_CUTR(g)::B(J)
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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).