MESON Chess Problem Database
Problem Display
PID: 118205 (6Q1/6K1/4P3/3P1P1p/1N1Bkn1N/4P3/8/8 w - - 0 1)
Petkov, Petko Andonov
Boletim da UBP, 1969
#2
9 + 3
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Sxe6+
- 2.Qxe6#
- 1...Sxe6+
- Tries
- 1.Kh6?
- 1...Sxd5
- 2.Qg2#
- 1...Sxe6
- 2.Qxe6#
- 2.Qg2#
- 1...Se2
- 2.Qg2#
- 1...Sg2
- 2.Qxg2#
- 1...Sd3
- 2.Qg2#
- 1...Sh3
- 2.Qg2#
- 1...Sg6!
- 1...Sxd5
- 1.Kf7?
- 1...Sxd5
- 2.Qg2#
- 1...Sxe6
- 2.Qg2#
- 1...Se2
- 2.Qg2#
- 1...Sg2
- 2.Qxg2#
- 1...Sd3
- 2.Qg2#
- 1...Sh3
- 2.Qg2#
- 1...Sg6!
- 1...Sxd5
- 1.Kh7?
- 1...Sxd5
- 2.Qg2#
- 1...Sxe6
- 2.Qxe6#
- 2.Qg2#
- 1...Se2
- 2.Qg2#
- 1...Sg2
- 2.Qxg2#
- 1...Sd3
- 2.Qg2#
- 1...Sh3
- 2.Qg2#
- 1...Sg6!
- 1...Sxd5
- 1.Kf8?
- 1...Sxe6+
- 2.Qxe6#
- 1...Sxd5
- 2.Qg2#
- 1...Se2
- 2.Qg2#
- 1...Sg2
- 2.Qxg2#
- 1...Sd3
- 2.Qg2#
- 1...Sh3
- 2.Qg2#
- 1...Sg6+!
- 1...Sxe6+
- 1.Kh8?
- 1...Sxd5
- 2.Qg2#
- 1...Sxe6
- 2.Qxe6#
- 2.Qg2#
- 1...Se2
- 2.Qg2#
- 1...Sg2
- 2.Qxg2#
- 1...Sd3
- 2.Qg2#
- 1...Sh3
- 2.Qg2#
- 1...Sg6+!
- 1...Sxd5
- 1.Qh7?
- 1...Sxe6+
- 2.fxe6#
- 1...Sxd5
- 2.f6#
- 1...Se2
- 2.f6#
- 1...Sg2
- 2.f6#
- 1...Sd3
- 2.f6#
- 1...Sh3
- 2.f6#
- 1...Sg6!
- 1...Sxe6+
- 1.Qc8?
- 1...Sxe6+
- 2.Qxe6#
- 1...Sxd5
- 2.Qc2#
- 1...Sg6
- 2.Qc2#
- 1...Se2
- 2.Qc2#
- 1...Sg2
- 2.Qc2#
- 1...Sh3
- 2.Qc2#
- 1...Sd3!
- 1...Sxe6+
- 1.d6?
- 1...Sxe6+
- 2.Qxe6#
- 1...Sg6
- 2.Qa8#
- 1...Se2
- 2.Qa8#
- 1...Sg2
- 2.Qa8#
- 1...Sd3
- 2.Qa8#
- 1...Sh3
- 2.Qa8#
- 1...Sd5!
- 1...Sxe6+
- 1.f6?
- 1...Sxe6+
- 2.Qxe6#
- 1...Sxd5
- 2.Qh7#
- 1...Se2
- 2.Qh7#
- 1...Sg2
- 2.Qh7#
- 1...Sd3
- 2.Qh7#
- 1...Sh3
- 2.Qh7#
- 1...Sg6!
- 1...Sxe6+
- 1.Kh6?
- Keys
- 1.Qa8!
- 1...Sxe6+
- 2.dxe6#
- 1...Sxd5
- 2.Qxd5#
- 1...Sg6
- 2.d6#
- 1...Se2
- 2.d6#
- 1...Sg2
- 2.d6#
- 1...Sd3
- 2.d6#
- 1...Sh3
- 2.d6#
- 1...Sxe6+
- 1.Qa8!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 6
- REMOVED MATES = 0
- Sets
- S(b);CHECK,OGATE,XP(G)::QAR2(I),XS(b)
- Tries
- Try
- K(H);S_FLIGHT
- Vars
- S(b);N_GUARD,XP(E)::QAB(I)
- S(b);N_GUARD::QAB(I)
- S(b);N_GUARD::QAB(I),XS(b)
- Refutation
- S(b);
- Try
- K(H);P-FLIGHT
- Vars
- S(b);N_GUARD,XP(E)::QAB(I)
- S(b);N_GUARD,XP(G)::QAB(I)
- S(b);N_GUARD::QAB(I)
- S(b);N_GUARD::QAB(I),XS(b)
- Refutation
- S(b);
- Try
- K(H);P-FLIGHT
- Vars
- S(b);N_GUARD,XP(E)::QAB(I)
- S(b);N_GUARD::QAB(I)
- S(b);N_GUARD::QAB(I),XS(b)
- Refutation
- S(b);
- Try
- K(H);S_FLIGHT
- Vars
- S(b);CHECK,OGATE,XP(G)::QAR2(I),XS(b)
- S(b);N_GUARD,XP(E)::QAB(I)
- S(b);N_GUARD::QAB(I)
- S(b);N_GUARD::QAB(I),XS(b)
- Refutation
- S(b);CHECK
- Try
- K(H);S_FLIGHT
- Vars
- S(b);N_GUARD,XP(E)::QAB(I)
- S(b);N_GUARD::QAB(I)
- S(b);N_GUARD::QAB(I),XS(b)
- Refutation
- S(b);CHECK
- Try
- Q(I);
- Vars
- S(b);CHECK,OGATE,XP(G)::QAB(I)+P(F),XS(b)
- S(b);N_GUARD,XP(E)::QAB(I)+P(F)
- S(b);N_GUARD::QAB(I)+P(F)
- Refutation
- S(b);
- Try
- Q(I);
- Vars
- S(b);CHECK,OGATE,XP(G)::QAR2(I),XS(b)
- S(b);N_GUARD,XP(E)::QAB(I)
- S(b);N_GUARD::QAB(I)
- Refutation
- S(b);
- Try
- P(E);
- Vars
- S(b);CHECK,OGATE,XP(G)::QAR2(I),XS(b)
- S(b);N_GUARD::QAB(I)
- Refutation
- S(b);
- Try
- P(F);
- Vars
- S(b);CHECK,OGATE,XP(G)::QAR2(I),XS(b)
- S(b);N_GUARD,XP(E)::QAB(I)
- S(b);N_GUARD::QAB(I)
- Refutation
- S(b);
- Try
- Actual
- Q(I);
- Vars
- S(b);CHECK,OGATE,XP(G)::QAB(I)+P(E),XS(b)
- S(b);OGATE,P_SPINS(b),XP(E)::QAB1(I),XS(b)
- S(b);N_GUARD::QAB(I)+P(E)
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).