MESON Chess Problem Database

Problem Display
PID: 205728 (8/8/4p3/Kp5r/1NkP2r1/4p1p1/P7/2NQBb2 w - - 0 1)

Homey, Hans

Dresden Solving Ty., 1925

8/8/4p3/Kp5r/1NkP2r1/4p1p1/P7/2NQBb2

#2

7 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd4
      • 2.Qc2#
    • 1...Bg2
      • 2.Qd3#
    • 1...Bd3
      • 2.Qxd3#
    • 1...Bh3
      • 2.Qd3#
    • 1...e2
      • 2.Qd3#
  • Tries
    • 1.Se2?
      • threat
        • 2.Qc2#
        • 2.Qb3#
        • 2.Qc1#
        • 2.Qd3#
      • 1...Rxd4
        • 2.Qc2#
        • 2.Qc1#
        • 2.Qxd4#
      • 1...Bxe2!
    • 1.Sb3?
      • threat
        • 2.Qc2#
        • 2.Qc1#
      • 1...Bd3
        • 2.Qxd3#
      • 1...Rh2!
    • 1.Bc3?
      • threat
        • 2.Qb3#
      • 1...Rxd4
        • 2.Qxd4#
      • 1...Kxc3!
  • Keys
    • 1.Scd3!
      • threat
        • 2.Sb2#
      • 1...Kxd4
        • 2.Qxg4#
      • 1...Rxd4
        • 2.Qc2#
        • 2.Qb3#
        • 2.Qc1#
      • 1...Bxd3
        • 2.Qxd3#
      • 1...Rh2
        • 2.Se5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • R(e);SBLOCK,XP(F)::QAR2(B)
    • B(a);N_GUARD::QAB1(B)
    • B(a);N_GUARD::QAB1(B),XB(a)
    • P(b);S_CUTB(a)::QAB1(B)
  • Tries
    • Try
      • S(A);
      • Threat
        • DUALS(4)
      • Refutation
        • B(a);XS(A)
    • Try
      • S(A);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);N_GUARD::QAB1(B),XB(a)
      • Refutation
        • R(g);
    • Try
      • B(C);
      • Threat
        • QAB1(B)
      • Vars
        • R(e);OGATE,XP(F)::QAR1(B),XR(e)
      • Refutation
        • K(d);P-FLIGHT,XB(C)
  • Actual
    • S(A);
    • Threat
      • S(A)
    • Vars
      • K(d);OGATEB,P-FLIGHT,XP(F)::QAR(B),XR(e)
      • B(a);OGATE,XS(A)::QAB1(B),XB(a)
      • R(g);N_GUARD::S(A)
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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).