MESON Chess Problem Database
Problem Display
PID: 273313 (r1n1Q3/3R1N1b/1p1P2r1/3k4/1P1N4/3B4/1BK2npq/8 w - - 0 1)
Dittrich, Stefan
diagrammes, 1978
#2
9 + 9
SOLUTION
- SOUND
- Sets
- 1...Qg1
- 2.Qe5#
- 1...Qe5
- 2.Qxe5#
- 1...Qxd6
- 2.Qe5#
- 1...Qh1
- 2.Qe5#
- 1...Qh3
- 2.Qe5#
- 1...Qh4
- 2.Qe5#
- 1...Qh6
- 2.Qe5#
- 1...Rg3
- 2.Qe5#
- 2.Qe6#
- 1...Rg4
- 2.Qe6#
- 1...Rg5
- 2.Qe6#
- 1...Rxd6
- 2.Qe6#
- 1...Re6
- 2.Qxe6#
- 1...Rg7
- 2.Qe6#
- 1...Rg8
- 2.Qe6#
- 1...Sd1
- 2.Qe4#
- 1...Sh1
- 2.Qe4#
- 1...Sh3
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sg4
- 2.Qe4#
- 1...Sxd6
- 2.Qxa8#
- 1...Qg1
- Tries
- 1.Rd8?
- threat
- 2.Qb5#
- 2.Qc6#
- 1...Sxd3
- 2.Qc6#
- 1...Ra5
- 2.Qc6#
- 1...Se4
- 2.Qc6#
- 2.Qxe4#
- 1...Se7
- 2.Qb5#
- 1...b5
- 2.Qxb5#
- 2.Qc6#
- 1...Sa7!
- threat
- 1.Qxc8?
- threat
- 2.Qb7#
- 2.Qc4#
- 2.Qc6#
- 2.Qxa8#
- 1...Sxd3
- 2.Qc6#
- 1...Rg8
- 2.Qb7#
- 2.Qc4#
- 2.Qc6#
- 1...Ra1
- 2.Qb7#
- 2.Qc4#
- 2.Qc6#
- 1...Ra2
- 2.Qb7#
- 2.Qc4#
- 2.Qc6#
- 1...Ra3
- 2.Qb7#
- 2.Qc4#
- 2.Qc6#
- 1...Ra4
- 2.Qb7#
- 2.Qc4#
- 2.Qc6#
- 1...Ra5
- 2.Qb7#
- 2.Qc4#
- 2.Qc6#
- 1...Ra6
- 2.Qb7#
- 2.Qc4#
- 2.Qc6#
- 1...Ra7
- 2.Qc4#
- 2.Qc6#
- 1...Rb8
- 2.Qc4#
- 2.Qc6#
- 1...b5
- 2.Qb7#
- 2.Qc5#
- 2.Qc6#
- 2.Qxa8#
- 1...Rxc8+!
- threat
- 1.Rd8?
- Keys
- 1.Rc7!
- threat
- 2.Bc4#
- 2.Qb5#
- 2.Qc6#
- 1...Qxd6
- 2.Bc4#
- 1...Rxd6
- 2.Qb5#
- 1...Sxd3
- 2.Qc6#
- 1...Sxd6
- 2.Qc6#
- 1...Qe5
- 2.Qb5#
- 2.Qc6#
- 2.Qxe5#
- 1...Rg3
- 2.Qb5#
- 2.Qc6#
- 2.Qe5#
- 2.Qe6#
- 1...Rg4
- 2.Qb5#
- 2.Qc6#
- 2.Qe6#
- 1...Rg5
- 2.Qb5#
- 2.Qc6#
- 2.Qe6#
- 1...Re6
- 2.Qb5#
- 2.Qc6#
- 2.Qxe6#
- 1...Rf6
- 2.Qb5#
- 2.Qc6#
- 1...Rh6
- 2.Qb5#
- 2.Qc6#
- 1...Rg7
- 2.Qb5#
- 2.Qc6#
- 2.Qe6#
- 1...Rg8
- 2.Qb5#
- 2.Qc6#
- 2.Qe6#
- 1...Ra5
- 2.Bc4#
- 2.Qc6#
- 1...Se4
- 2.Bc4#
- 2.Bxe4#
- 2.Qc6#
- 2.Qxe4#
- 1...Sa7
- 2.Bc4#
- 1...Se7
- 2.Qb5#
- 1...b5
- 2.Rc5#
- 2.Qxb5#
- 2.Qc6#
- threat
- 1.Rc7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 3
- REMOVED MATES = 16
- Sets
- Q(c);N_GUARD::QAR1(I)
- Q(c);N_GUARD::QAR1(I),XQ(c)
- Q(c);N_GUARD,P_SPINQ(c),XP(F)::QAR1(I)
- R(f);N_GUARD,P_PINB(C)::QAB1(I)
- R(f);N_GUARD,P_PINB(C),P_SPINR(f),XP(F)::QAB1(I)
- R(f);N_GUARD,P_PINB(C)::QAB1(I),XR(f)
- S(a);N_GUARD::QAB1(I)
- S(a);N_GUARD::QAB1(I),XS(a)
- S(i);OGATE,P_SPINS(i),XP(F)::QAB(I),XR(h)
- Tries
- Try
- R(G);
- Threat
- DUALS(2)
- Vars
- S(a);XB(C)::QAB1(I)
- R(h);::QAB1(I)
- S(i);::QAR2(I)
- Refutation
- S(i);
- Try
- Q(I);XS(i)
- Threat
- DUALS(4)
- Vars
- S(a);XB(C)::QAB1(I)
- Refutation
- R(h);CHECK,XQ(I)
- Try
- Actual
- R(G);
- Threat
- DUALS(3)
- Vars
- Q(c);XP(F)::B(C)
- R(f);P_PINB(C),XP(F)::QAR2(I)
- S(a);XB(C)::QAB1(I)
- S(i);XP(F)::QAB1(I)
- S(i);::B(C)
- S(i);::QAR2(I)
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).