MESON Chess Problem Database

Problem Display
PID: 203274 (2K5/p1P2p1n/4kP2/b3P3/3Pp3/n3N2b/7r/2B2Q2 w - - 0 1)

Roscher, Willy

Pfalzische Ty., 1924

2K5/p1P2p1n/4kP2/b3P3/3Pp3/n3N2b/7r/2B2Q2

#2

8 + 9

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ra2
      • 2.Qxh3#
    • 1...Rb2
      • 2.Qxh3#
    • 1...Rc2
      • 2.Qxh3#
    • 1...Rd2
      • 2.Qxh3#
    • 1...Re2
      • 2.Qxh3#
    • 1...Bg2
      • 2.Qf5#
    • 1...Bf5
      • 2.Qxf5#
    • 1...Be1
      • 2.Qa6#
    • 1...Bd2
      • 2.Qa6#
    • 1...Bc3
      • 2.Qa6#
    • 1...Sb1
      • 2.Qc4#
    • 1...Sc2
      • 2.Qc4#
    • 1...Sc4
      • 2.Qxc4#
    • 1...Sb5
      • 2.Qc4#
    • 1...Sxf6
      • 2.Qxf6#
  • Tries
    • 1.Bxa3?
      • threat
        • 2.Qc4#
      • 1...Sxf6
        • 2.Qxf6#
      • 1...Rc2
        • 2.Qxh3#
      • 1...Re2
        • 2.Qxh3#
      • 1...Bxf1!
    • 1.Qf4?
      • threat
        • 2.d5#
      • 1...Sxf6
        • 2.Qxf6#
      • 1...Rd2!
  • Keys
    • 1.Bb2!
      • threat
        • 2.d5#
      • 1...Rxb2
        • 2.Qxh3#
      • 1...Sxf6
        • 2.Qxf6#
      • 1...Rd2
        • 2.Qxh3#
      • 1...Bc3
        • 2.Qa6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 11
  • Sets
    • R(a);N_GUARD::QAB(B),XB(c)
    • R(a);N_GUARD,P_PINP(G)::QAB(B),XB(c)
    • B(c);N_GUARD::QAB1(B)
    • B(c);N_GUARD::QAB1(B),XB(c)
    • B(e);N_GUARD::QAR(B)
    • S(b);N_GUARD::QAB(B)
    • S(b);N_GUARD::QAB(B),XS(b)
    • S(i);OGATE,XP(F)::QAR1(B),XS(i)
  • Tries
    • Try
      • B(A);XS(b)
      • Threat
        • QAB(B)
      • Vars
        • S(i);OGATE,XP(F)::QAR1(B),XS(i)
        • R(a);N_GUARD,P_PINP(G)::QAB(B),XB(c)
        • R(a);N_GUARD::QAB(B),XB(c)
      • Refutation
        • B(c);XQ(B)
    • Try
      • Q(B);
      • Threat
        • P(D)
      • Vars
        • S(i);OGATE,XP(F)::QAR1(B),XS(i)
      • Refutation
        • R(a);
  • Actual
    • B(A);
    • Threat
      • P(D)
    • Vars
      • R(a);N_GUARD,XB(A)::QAB(B),XB(c)
      • S(i);OGATE,XP(F)::QAR1(B),XS(i)
      • R(a);N_GUARD::QAB(B),XB(c)
      • B(e);N_GUARD::QAR(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).