MESON Chess Problem Database
Problem Display
PID: 136776 (2q5/2b3p1/n1Q4N/3Bkp1b/4NR2/6P1/3R1P2/3n2K1 w - - 0 1)
Kohring, Rolf
Die Schwalbe, 2010
#2
9 + 8
SOLUTION
- SOUND
- Sets
- 1...Qe6
- 2.Qxe6#
- 1...Qb7
- 2.Rxf5#
- 2.Qe6#
- 1...Qa8
- 2.Rxf5#
- 2.Qe6#
- 1...Qb8
- 2.Rxf5#
- 2.Qe6#
- 1...Qd8
- 2.Rxf5#
- 2.Qe6#
- 1...Qe8
- 2.Rxf5#
- 1...Qf8
- 2.Qe6#
- 1...Qg8
- 2.Rxf5#
- 1...Qh8
- 2.Rxf5#
- 2.Qe6#
- 1...Be2
- 2.Sf7#
- 1...Bf3
- 2.Sf7#
- 1...Bg4
- 2.Sf7#
- 1...Bf7
- 2.Sxf7#
- 1...Ba5
- 2.Qd6#
- 1...Bb6
- 2.Qd6#
- 1...Bd6
- 2.Qxd6#
- 1...Bd8
- 2.Qd6#
- 1...Sb2
- 2.Qc3#
- 1...Sxf2
- 2.Qc3#
- 1...Sc3
- 2.Qxc3#
- 1...Se3
- 2.Qc3#
- 1...fxe4
- 2.Rxe4#
- 1...gxh6
- 2.Qf6#
- 1...g5
- 2.Qf6#
- 1...g6
- 2.Sf7#
- 2.Qf6#
- 1...Qe6
- Tries
- 1.Rg4?
- threat
- 2.f4#
- 1...Sxf2
- 2.Qc3#
- 1...fxe4
- 2.Rxe4#
- 1...Bb6
- 2.Qd6#
- 1...f4
- 2.gxf4#
- 1...g5
- 2.Qf6#
- 1...fxg4!
- threat
- 1.Qd7?
- threat
- 2.Rxf5#
- 2.Qxg7#
- 1...fxe4
- 2.Rf5#
- 1...gxh6
- 2.Rxf5#
- 2.Qg7#
- 1...Qd8
- 2.Rxf5#
- 2.Qxf5#
- 2.Qe6#
- 1...Qf8
- 2.Qe6#
- 1...Qg8
- 2.Rxf5#
- 2.Qxf5#
- 1...Qh8
- 2.Rxf5#
- 2.Qxf5#
- 2.Qe6#
- 2.Qe7#
- 1...Bg4
- 2.Sf7#
- 2.Qxg7#
- 1...Bg6
- 2.Qxg7#
- 1...Bf7
- 2.Sxf7#
- 2.Rxf5#
- 1...Bd8
- 2.Rxf5#
- 2.Qd6#
- 1...Se3
- 2.Qxg7#
- 1...g5
- 2.Rxf5#
- 2.Qg7#
- 1...g6
- 2.Sf7#
- 2.Qg7#
- 1...Qxd7!
- threat
- 1.Qe8+?
- 1...Qe6
- 2.Rxf5#
- 2.Qxe6#
- 1...Qxe8
- 2.Rxf5#
- 1...Bxe8!
- 1...Qe6
- 1.Qxc7+?
- 1...Qxc7
- 2.Rxf5#
- 1...Sxc7!
- 1...Qxc7
- 1.Rg4?
- Keys
- 1.Rh4!
- threat
- 2.f4#
- 1...Sxf2
- 2.Qc3#
- 1...fxe4
- 2.Rxe4#
- 1...Bf3
- 2.Sf7#
- 1...Bb6
- 2.Qd6#
- 1...f4
- 2.gxf4#
- 1...g5
- 2.Qf6#
- threat
- 1.Rh4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 14
- Sets
- Q(h);N_GUARD::QAR1(H),XQ(h)
- Q(h);N_GUARD::R1(F),XP(c)
- Q(h);N_GUARD::QAR1(H)
- B(d);N_GUARD::S(I)
- B(d);N_GUARD::S(I),XB(d)
- B(f);N_GUARD::QAB1(H)
- B(f);N_GUARD,P_PINP(C)::QAB1(H)
- B(f);N_GUARD::QAB1(H),XB(f)
- S(a);N_GUARD::QAB(H)
- S(a);N_GUARD,XP(C)::QAB(H)
- S(a);N_GUARD::QAB(H),XS(a)
- P(c);OGATE,XS(E)::R1(F),XP(c)
- P(g);N_GUARD,XS(I)::QAB1(H)
- P(g);N_GUARD::QAB1(H)
- Tries
- Try
- R(F);
- Threat
- P(C)
- Vars
- S(a);N_GUARD,XP(C)::QAB(H)
- P(c);OGATE,XS(E)::R1(F),XP(c)
- B(f);N_GUARD,P_PINP(C)::QAB1(H)
- P(c);OGATE::P(D),XP(c)
- P(g);N_GUARD::QAB1(H)
- Refutation
- P(c);XR(F)
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- P(c);XS(E)::R1(F)
- Q(h);N_GUARD::QAR1(H)
- B(d);::QAB(H),XP(g)
- S(a);::QAB(H),XP(g)
- Refutation
- Q(h);XQ(H)
- Try
- Q(H);CHECK
- Vars
- Q(h);XQ(H)::R1(F),XP(c)
- Refutation
- B(d);XQ(H)
- Try
- Q(H);CHECK,XB(f)
- Vars
- Q(h);XQ(H)::R1(F),XP(c)
- Refutation
- S(e);XQ(H)
- Try
- Actual
- R(F);
- Threat
- P(C)
- Vars
- S(a);N_GUARD,XP(C)::QAB(H)
- P(c);OGATE,XS(E)::R1(F),XP(c)
- B(d);N_GUARD::S(I)
- B(f);N_GUARD,P_PINP(C)::QAB1(H)
- P(c);OGATE::P(D),XP(c)
- P(g);N_GUARD::QAB1(H)
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).