MESON Chess Problem Database
Problem Display
PID: 142887 (8/8/4Kp2/8/3pk1pr/4p1Q1/2P4N/3N4 w - - 0 1)
Roche, Jean
diagrammes, 1973
#2
5 + 6
SOLUTION
- SOUND
- Sets
- 1...Rxh2
- 2.Qxg4#
- 1...Rh3
- 2.Qxg4#
- 1...Rh5
- 2.Qxg4#
- 1...Rh6
- 2.Qxg4#
- 1...Rh7
- 2.Qxg4#
- 1...Rh8
- 2.Qxg4#
- 1...e2
- 2.Sf2#
- 1...d3
- 2.Qxe3#
- 1...f5
- 2.Qe5#
- 1...Rxh2
- Tries
- 1.Sf1?
- 1...d3
- 2.Qxe3#
- 1...Rh1
- 2.Qxg4#
- 1...Rh2
- 2.Qxg4#
- 1...Rh3
- 2.Qxg4#
- 1...Rh5
- 2.Qxg4#
- 1...Rh6
- 2.Qxg4#
- 1...Rh7
- 2.Qxg4#
- 1...Rh8
- 2.Qxg4#
- 1...e2
- 2.Sf2#
- 2.Sd2#
- 1...f5!
- 1...d3
- 1.Sxg4?
- threat
- 2.Sxf6#
- 1...Rxg4
- 2.Qxg4#
- 1...d3
- 2.Qxe3#
- 1...f5
- 2.Sf6#
- 1...Rh6!
- threat
- 1.Qxh4?
- threat
- 2.Qxg4#
- 1...Kf4
- 2.Qxg4#
- 1...f5!
- threat
- 1.Sf1?
- Keys
- 1.Sf3!
- 1...gxf3
- 2.Qxh4#
- 1...Rh1
- 2.Qxg4#
- 1...Rh2
- 2.Qxg4#
- 1...Rh3
- 2.Qxg4#
- 1...Rh5
- 2.Qxg4#
- 1...Rh6
- 2.Qxg4#
- 1...Rh7
- 2.Qxg4#
- 1...Rh8
- 2.Qxg4#
- 1...e2
- 2.Sd2#
- 1...d3
- 2.Sc3#
- 1...f5
- 2.Sg5#
- 1...gxf3
- 1.Sf3!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 3
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- R(e);N_GUARD,XS(C)::QAR2(D),XP(d)
- R(e);N_GUARD::QAR2(D),XP(d)
- P(a);N_GUARD::S(A)
- P(b);N_GUARD::QAR1(D),XP(a)
- P(f);N_GUARD::QAR1(D)
- Tries
- Try
- S(C);
- Vars
- P(b);N_GUARD::QAR1(D),XP(a)
- R(e);N_GUARD::QAR2(D),XP(d)
- Refutation
- P(f);
- Try
- S(C);XP(d)
- Threat
- S(C),XP(f)
- Vars
- R(e);OGATE,XS(C)::QAR2(D),XR(e)
- P(b);N_GUARD::QAR1(D),XP(a)
- P(f);::S(C)
- Refutation
- R(e);
- Try
- Q(D);P_PINP(d),XR(e)
- Threat
- QAR2(D),XP(d)
- Vars
- K(c);P-FLIGHT::QAR1(D),XP(d)
- Refutation
- P(f);
- Try
- Actual
- S(C);
- Vars
- P(d);OGATEB,SBLOCK,XS(C)::QAR(D),XR(e)
- R(e);N_GUARD::QAR2(D),XP(d)
- P(a);N_GUARD::S(C)
- P(b);N_GUARD::S(A)
- P(f);N_GUARD::S(C)
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).