MESON Chess Problem Database
Problem Display
PID: 78866 (BKN5/p7/2R3n1/1p1k1b2/4q1R1/1n1NQ3/8/8 w - - 0 1)
des Marands, Henri
Comm., Express Wieczorny, 1951
#2
7 + 7
SOLUTION
- SOUND
- Sets
- 1...Qh1
- 2.Sb4#
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rcc4#
- 2.Rc5#
- 2.Ra6#
- 2.Rb6#
- 2.Rd6#
- 2.Re6#
- 2.Rf6#
- 2.Rcxg6#
- 2.Rc7#
- 1...Qg2
- 2.Sb4#
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rcc4#
- 2.Rc5#
- 2.Ra6#
- 2.Rb6#
- 2.Rd6#
- 2.Re6#
- 2.Rf6#
- 2.Rcxg6#
- 2.Rc7#
- 1...Qxd3
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rcc4#
- 2.Rc5#
- 2.Ra6#
- 2.Rb6#
- 2.Rd6#
- 2.Re6#
- 2.Rf6#
- 2.Rcxg6#
- 2.Rc7#
- 1...Qf3
- 2.Sb4#
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rcc4#
- 2.Rc5#
- 2.Ra6#
- 2.Rb6#
- 2.Rd6#
- 2.Re6#
- 2.Rf6#
- 2.Rcxg6#
- 2.Rc7#
- 1...Qxe3
- 2.Ra6#
- 2.Rb6#
- 2.Rd6#
- 2.Rf6#
- 2.Rcxg6#
- 1...Qa4
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rcc4#
- 2.Rc5#
- 2.Ra6#
- 2.Rb6#
- 2.Rd6#
- 2.Re6#
- 2.Rf6#
- 2.Rcxg6#
- 2.Rc7#
- 1...Qb4
- 2.Sxb4#
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rcc4#
- 2.Rc5#
- 2.Ra6#
- 2.Rb6#
- 2.Rd6#
- 2.Re6#
- 2.Rf6#
- 2.Rcxg6#
- 2.Rc7#
- 1...Qc4
- 2.Rcxc4#
- 2.Rc5#
- 2.Rd6#
- 1...Qd4
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rc5#
- 2.Rc7#
- 1...Qf4+
- 2.Rc7#
- 1...Qxg4
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rc5#
- 2.Rc7#
- 1...Qe5+
- 2.Rd6#
- 1...Qe6
- 2.Sb4#
- 2.Rc5#
- 2.Rd6#
- 2.Rxe6#
- 1...Qe7
- 2.Rc5#
- 2.Rd6#
- 2.Rc7#
- 1...Qe8
- 2.Sb4#
- 2.Rc5#
- 2.Rd6#
- 1...Be6
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rc5#
- 2.Rc7#
- 2.Qxe4#
- 1...Bd7
- 2.Qxe4#
- 1...Bxc8
- 2.Qxe4#
- 1...Sa1
- 2.Qc5#
- 1...Sc1
- 2.Qc5#
- 1...Sd2
- 2.Qc5#
- 1...Sa5
- 2.Qc5#
- 1...Sc5
- 2.Qxc5#
- 1...Se5
- 2.Se7#
- 1...a5
- 2.Sb6#
- 1...a6
- 2.Sb6#
- 1...Qh1
- Tries
- 1.Sb4+?
- 1...Qxb4
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rcc4#
- 2.Rc5#
- 2.Ra6#
- 2.Rb6#
- 2.Rd6#
- 2.Re6#
- 2.Rf6#
- 2.Rcxg6#
- 2.Rc7#
- 1...Ke5!
- 1...Qxb4
- 1.Rxe4?
- threat
- 2.Sb4#
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rcc4#
- 2.Rc5#
- 2.Ra6#
- 2.Rb6#
- 2.Rd6#
- 2.Rce6#
- 2.Rf6#
- 2.Rxg6#
- 2.Rc7#
- 1...Bxc8
- 2.Sb4#
- 1...Be6
- 2.Sb4#
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rcc4#
- 2.Rc5#
- 2.Ra6#
- 2.Rb6#
- 2.Rd6#
- 2.Rcxe6#
- 2.Rc7#
- 1...Bd7
- 2.Sb4#
- 2.Rc5#
- 2.Rd6#
- 1...Sc1
- 2.Sb4#
- 2.Rd4#
- 2.Rxc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rcc4#
- 2.Rc5#
- 2.Ra6#
- 2.Rb6#
- 2.Rd6#
- 2.Rce6#
- 2.Rf6#
- 2.Rxg6#
- 2.Rc7#
- 2.Qd4#
- 1...Sd4
- 2.Sb4#
- 2.Rxd4#
- 2.Rc5#
- 2.Qxd4#
- 1...Sa5
- 2.Sb4#
- 2.Rd4#
- 2.Rc5#
- 2.Rd6#
- 2.Qd4#
- 1...Sc5
- 2.Sb4#
- 2.Rd4#
- 2.Rxc5#
- 2.Rd6#
- 2.Qd4#
- 1...Sf4
- 2.Sb4#
- 2.Sxf4#
- 2.Se7#
- 2.Re5#
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rcc4#
- 2.Rc5#
- 2.Ra6#
- 2.Rb6#
- 2.Rd6#
- 2.Rce6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 2.Rc7#
- 1...Sh4
- 2.Sb4#
- 2.Sf4#
- 2.Se7#
- 2.Re5#
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rcc4#
- 2.Rc5#
- 2.Ra6#
- 2.Rb6#
- 2.Rd6#
- 2.Rce6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 2.Rc7#
- 1...Se5
- 2.Sb4#
- 2.Sf4#
- 2.Se7#
- 2.Rxe5#
- 2.Rd6#
- 1...Se7
- 2.Sb4#
- 2.Sf4#
- 2.Sxe7#
- 2.Re5#
- 2.Rc5#
- 2.Rd6#
- 1...Sf8
- 2.Sb4#
- 2.Sf4#
- 2.Se7#
- 2.Re5#
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rcc4#
- 2.Rc5#
- 2.Ra6#
- 2.Rb6#
- 2.Rd6#
- 2.Rce6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 2.Rc7#
- 1...Sh8
- 2.Sb4#
- 2.Sf4#
- 2.Se7#
- 2.Re5#
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rcc4#
- 2.Rc5#
- 2.Ra6#
- 2.Rb6#
- 2.Rd6#
- 2.Rce6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 2.Rc7#
- 1...b4
- 2.Sxb4#
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rcc4#
- 2.Rc5#
- 2.Ra6#
- 2.Rb6#
- 2.Rd6#
- 2.Rce6#
- 2.Rf6#
- 2.Rxg6#
- 2.Rc7#
- 1...a5
- 2.Sb6#
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rcc4#
- 2.Rc5#
- 2.Ra6#
- 2.Rb6#
- 2.Rd6#
- 2.Rce6#
- 2.Rf6#
- 2.Rxg6#
- 2.Rc7#
- 1...a6
- 2.Sb4#
- 2.Sb6#
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rcc4#
- 2.Rc5#
- 2.Rxa6#
- 2.Rb6#
- 2.Rd6#
- 2.Rce6#
- 2.Rf6#
- 2.Rxg6#
- 2.Rc7#
- 1...Bxe4!
- threat
- 1.Sb4+?
- Keys
- 1.Kxa7!
- threat
- 2.Sb6#
- 1...Qxe3+
- 2.Rb6#
- 1...Qa4+
- 2.Ra6#
- 1...Qd4+
- 2.Rc5#
- 1...Qe7+
- 2.Rc7#
- 1...Bxc8
- 2.Qxe4#
- threat
- 1.Kxa7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 11
- Sets
- Q(b);CHECK::B(E)+R(D)
- Q(b);CHECK::B(E)+R(D),DCHECK
- B(e);N_GUARD::QAB1(B),XQ(b)
- B(e);N_GUARD,XS(G)::QAB1(B),XQ(b)
- S(a);N_GUARD::QAR1(B)
- S(a);N_GUARD::QAR1(B),XS(a)
- S(f);N_GUARD,S_CUTQ(b)::S(G)
- P(g);N_GUARD::S(G)
- Tries
- Try
- S(A);CHECK
- Refutation
- K(d);P-FLIGHT,P_SPINQ(b)
- Try
- R(C);XQ(b)
- Threat
- DUALS(13)
- Vars
- B(e);XS(G)::S(A)
- Refutation
- B(e);XR(C)
- Try
- Actual
- K(F);S_FLIGHT,XP(g)
- Threat
- S(G)
- Vars
- Q(b);CHECK,XQ(B)::B(E)+R(D)
- Q(b);CHECK::B(E)+R(D)
- Q(b);CHECK::B(E)+R(D),DCHECK
- B(e);N_GUARD,XS(G)::QAB1(B),XQ(b)
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).