MESON Chess Problem Database
Problem Display
PID: 145331 (3q4/N1PR1pBp/3r2RK/1N1k2p1/1P1Pn2p/5n1r/6B1/5Q1b w - - 0 1)
Latzel, Gerhard Paul
L'Echiquier, 1935
#2
11 + 11
SOLUTION
- SOUND
- Sets
- 1...Qxc7
- 2.Sxc7#
- 1...Se1
- 2.Rgxd6#
- 2.Qxf7#
- 1...Sg1
- 2.Rgxd6#
- 2.Qxf7#
- 1...Sfd2
- 2.Rgxd6#
- 2.Qxf7#
- 1...Sh2
- 2.Rgxd6#
- 2.Qxf7#
- 1...Sxd4
- 2.Rgxd6#
- 1...Se5
- 2.Rgxd6#
- 1...Sed2
- 2.Sc3#
- 1...Sf2
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sg3
- 2.Sc3#
- 1...Sc5
- 2.Sc3#
- 1...Qxc7
- Tries
- 1.Rdxd6+?
- 1...Sxd6
- 2.Sc3#
- 1...Qxd6!
- 1...Sxd6
- 1.Qd3?
- threat
- 2.Qb3#
- 1...Qxc7
- 2.Sxc7#
- 1...Sxd4
- 2.Sc3#
- 2.Rgxd6#
- 2.Qxd4#
- 1...Se1
- 2.Sc3#
- 2.Rgxd6#
- 1...Sg1
- 2.Sc3#
- 2.Rgxd6#
- 1...Sfd2
- 2.Sc3#
- 2.Rgxd6#
- 1...Sh2
- 2.Sc3#
- 2.Rgxd6#
- 1...Se5
- 2.Sc3#
- 2.Rgxd6#
- 1...Sed2
- 2.Sc3#
- 2.Rgxd6#
- 1...Sf2
- 2.Sc3#
- 2.Rgxd6#
- 1...Sc3
- 2.Sxc3#
- 2.Rgxd6#
- 1...Sg3
- 2.Sc3#
- 2.Rgxd6#
- 1...Sc5
- 2.Sc3#
- 2.Rgxd6#
- 2.dxc5#
- 1...Sf6!
- threat
- 1.cxd8Q?
- threat
- 2.Sc7#
- 2.Qa8#
- 1...Rxd7
- 2.Sc7#
- 1...Sxd4
- 2.Sc7#
- 2.Rgxd6#
- 2.Rdxd6#
- 1...fxg6
- 2.Sc7#
- 2.Qg8#
- 1...hxg6
- 2.Sc7#
- 1...Sed2
- 2.Sc3#
- 2.Qa8#
- 1...Sf2
- 2.Sc3#
- 2.Qa8#
- 1...Sc3
- 2.Sxc3#
- 2.Qa8#
- 1...Sg3
- 2.Sc3#
- 2.Qa8#
- 1...Sc5
- 2.Sc3#
- 1...f6
- 2.Qg8#
- 1...Se5
- 2.Rgxd6#
- 2.Rdxd6#
- 1...Sf6!
- threat
- 1.Rdxd6+?
- Keys
- 1.Qe2!
- threat
- 2.Qa2#
- 1...Qxc7
- 2.Sxc7#
- 1...Sxd4
- 2.Rgxd6#
- 1...Se1
- 2.Rgxd6#
- 1...Sg1
- 2.Rgxd6#
- 1...Sfd2
- 2.Rgxd6#
- 1...Sh2
- 2.Rgxd6#
- 1...Se5
- 2.Rgxd6#
- 1...Sed2
- 2.Sc3#
- 2.Rgxd6#
- 1...Sf2
- 2.Sc3#
- 2.Rgxd6#
- 1...Sc3
- 2.Sxc3#
- 2.Rgxd6#
- 1...Sg3
- 2.Sc3#
- 2.Rgxd6#
- 1...Sc5
- 2.Sc3#
- 2.Rgxd6#
- 1...Sf6
- 2.Rxg5#
- threat
- 1.Qe2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 5
- Sets
- Q(k);XP(I)::S(E),XQ(k)
- S(b);P_SPINS(d),XP(D)::R1(F),XR(h)
- S(b);P_SPINS(d)::R1(F),XR(h)
- S(d);N_GUARD,P_SPINS(b)::S(E)
- S(d);N_GUARD,P_SPINS(b)::S(E),XS(d)
- Tries
- Try
- R(J);CHECK,N_SPINR(F),XR(h)
- Vars
- S(d);P_SPINS(b),XR(J)::S(E)
- Refutation
- Q(k);P_PINR(F),XR(J)
- Try
- Q(A);
- Threat
- QAB(A)
- Vars
- Q(k);XP(I)::S(E),XQ(k)
- Refutation
- S(d);N_PINR(F),P_SPINS(b)
- Try
- P(I);XQ(k)
- Threat
- DUALS(2)
- Vars
- R(h);N_PINR(F),XR(J)::S(E)
- P(j);XR(F)::S(E)
- S(d);N_GUARD,P_SPINS(b)::S(E)
- P(i);N_PINR(F),OGATEB::QAB(I)
- Refutation
- S(d);N_PINR(F),P_SPINS(b)
- Try
- Actual
- Q(A);
- Threat
- QAB(A)
- Vars
- Q(k);XP(I)::S(E),XQ(k)
- S(b);P_SPINS(d),XP(D)::R1(F),XR(h)
- S(b);P_SPINS(d)::R1(F),XR(h)
- S(d);N_PINR(F),P_SPINS(b)::R(F),XP(g)
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).