MESON Chess Problem Database

Problem Display
PID: 60233 (b7/1n1K4/2Q5/2pR4/4k3/1Nb1P1pP/B4p2/3Nn1B1 w - - 0 1)

Lindgren, Bo Waldemar

Source?, 0000

b7/1n1K4/2Q5/2pR4/4k3/1Nb1P1pP/B4p2/3Nn1B1

#2

9 + 8

5619 Moscow Open Solving 2003
5405 Chess Solving Yearbook 2003 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Kf3
      • 2.Rd2#
    • 1...Ba1
      • 2.Sd2#
    • 1...Bb2
      • 2.Sd2#
    • 1...Bd2
      • 2.Sxd2#
    • 1...Bf6
      • 2.Sd2#
    • 1...Bg7
      • 2.Sd2#
    • 1...Bh8
      • 2.Sd2#
    • 1...Sd3
      • 2.Rxc5#
      • 2.Rg5#
      • 2.Rh5#
    • 1...Sf3
      • 2.Bb1#
  • Tries
    • 1.Ke6?
      • threat
        • 2.Rd2#
        • 2.Rd4#
        • 2.Rd6#
        • 2.Rd7#
        • 2.Rd8#
      • 1...Kf3
        • 2.Rd2#
      • 1...Bd4
        • 2.Rxd4#
      • 1...Bd2
        • 2.Sxd2#
        • 2.Rxd2#
        • 2.Rd4#
        • 2.Rd6#
        • 2.Rd7#
        • 2.Rd8#
      • 1...Sd3
        • 2.Rd4#
        • 2.Rxc5#
        • 2.Re5#
        • 2.Rf5#
        • 2.Rg5#
        • 2.Rh5#
        • 2.Rd6#
        • 2.Rd7#
        • 2.Rd8#
      • 1...Sa5
        • 2.Rd4#
      • 1...Sd6
        • 2.Rd4#
      • 1...Sd8+!
    • 1.Sxc3+?
      • 1...Kf3
        • 2.Rd3#
        • 2.Re5#
      • 1...Kxe3!
    • 1.Sxc5+?
      • 1...Kf3
        • 2.Rd2#
      • 1...Sxc5+!
    • 1.Bb1+?
      • 1...Kf3
        • 2.Rd2#
      • 1...Sd3
        • 2.Rxc5#
        • 2.Rg5#
        • 2.Rh5#
      • 1...Sc2!
    • 1.Rd2+?
      • 1...Ke5
        • 2.Qe6#
      • 1...Kf5!
    • 1.Rd4+?
      • 1...Ke5
        • 2.Qe6#
      • 1...Kf5!
    • 1.Re5+?
      • 1...Kxe5
        • 2.Qe6#
      • 1...Kd3!
    • 1.Rd6+?
      • 1...Ke5
        • 2.Qd5#
      • 1...Kf5!
    • 1.Qe6+?
      • 1...Be5
        • 2.Sd2#
      • 1...Kf3!
    • 1.Qg6+?
      • 1...Kxd5
        • 2.Qe6#
      • 1...Kf3!
  • Keys
    • 1.Qf6!
      • threat
        • 2.Qf5#
      • 1...Kxd5
        • 2.Qe6#
      • 1...Bxf6
        • 2.Sd2#
      • 1...f1Q
        • 2.Sxc3#
      • 1...f1R
        • 2.Sxc3#
      • 1...Be5
        • 2.Sd2#
      • 1...Sd6
        • 2.Sxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 7
  • Sets
    • K(e);S_FLIGHT::QAB(H)+R(G)
    • B(c);N_GUARD::S(D)
    • B(c);N_GUARD::S(D),XB(c)
    • S(a);N_GUARD,SBLOCK::B(C)
  • Tries
    • Try
      • K(I);S_FLIGHT
      • Threat
        • DUALS(5)
      • Vars
        • K(e);S_FLIGHT::QAB(H)+R(G)
        • B(c);::QAB(H)+R(G),DCHECK,XB(c)
        • S(g);::QAB(H)+R(G),DCHECK
      • Refutation
        • S(g);CHECK
    • Try
      • S(A);CHECK,XB(c)
      • Refutation
        • K(e);P-FLIGHT,P_SPINP(b),XP(E)
    • Try
      • S(D);CHECK,XP(f)
      • Vars
        • K(e);S_FLIGHT::QAB(H)+R(G)
      • Refutation
        • S(g);CHECK,XS(D)
    • Try
      • B(C);CHECK
      • Vars
        • K(e);S_FLIGHT::QAB(H)+R(G)
      • Refutation
        • S(a);P_SPINS(a)
    • Try
      • R(G);CHECK
      • Vars
        • K(e);P-FLIGHT::QAR1(H)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • R(G);CHECK
      • Vars
        • K(e);P-FLIGHT::QAR1(H)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • R(G);CHECK
      • Vars
        • K(e);P-FLIGHT,XR(G)::QAR1(H)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • R(G);CHECK
      • Vars
        • K(e);P-FLIGHT::QAR1(H)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • Q(H);CHECK
      • Vars
        • B(c);P_SPINB(c)::S(D)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • Q(H);CHECK
      • Vars
        • K(e);S_FLIGHT,XR(G)::QAB1(H)
      • Refutation
        • K(e);S_FLIGHT
  • Actual
    • Q(H);
    • Threat
      • QAB1(H)
    • Vars
      • K(e);S_FLIGHT,XR(G)::QAB1(H)
      • B(c);N_GUARD,XQ(H)::S(D)
      • P(b);::S(A),XB(c)
      • B(c);N_GUARD::S(D)
      • S(g);N_GUARD::S(D),XP(f)
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).