MESON Chess Problem Database
Problem Display
PID: 201428 (Q7/3p3K/3B3P/8/2PkP3/1Pnn4/1p1P4/1B6 w - - 0 1)
Gross, J
L'Alfiere di Re, 1922
#2
9 + 5
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Sxb1
- 2.Qd5#
- 1...Sd1
- 2.Qd5#
- 1...Sa2
- 2.Qd5#
- 1...Se2
- 2.Qd5#
- 1...Sa4
- 2.Qd5#
- 1...Sxe4
- 2.Qd5#
- 1...Sb5
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Sc1
- 2.Qa7#
- 2.Qh8#
- 1...Se1
- 2.Qa7#
- 2.Qh8#
- 1...Sf2
- 2.Qa7#
- 2.Qh8#
- 1...Sb4
- 2.Qa7#
- 2.Qh8#
- 1...Sf4
- 2.Qa7#
- 2.Qh8#
- 1...Sc5
- 2.Qh8#
- 1...Se5
- 2.Qa7#
- 1...Sxb1
- Tries
- 1.Kg7?
- 1...Sxb1
- 2.Qd5#
- 1...Sxe4
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Sd1
- 2.Qd5#
- 1...Sa2
- 2.Qd5#
- 1...Se2
- 2.Qd5#
- 1...Sa4
- 2.Qd5#
- 1...Sb5
- 2.Qd5#
- 1...Sc1
- 2.Qa7#
- 1...Se1
- 2.Qa7#
- 1...Sf2
- 2.Qa7#
- 1...Sb4
- 2.Qa7#
- 1...Sf4
- 2.Qa7#
- 1...Se5
- 2.Qa7#
- 1...Sc5!
- 1...Sxb1
- 1.Kg8?
- 1...Sxb1
- 2.Qd5#
- 1...Sxe4
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Sd1
- 2.Qd5#
- 1...Sa2
- 2.Qd5#
- 1...Se2
- 2.Qd5#
- 1...Sa4
- 2.Qd5#
- 1...Sb5
- 2.Qd5#
- 1...Sc1
- 2.Qa7#
- 1...Se1
- 2.Qa7#
- 1...Sf2
- 2.Qa7#
- 1...Sb4
- 2.Qa7#
- 1...Sf4
- 2.Qa7#
- 1...Se5
- 2.Qa7#
- 1...Sc5!
- 1...Sxb1
- 1.Kh8?
- 1...Sxb1
- 2.Qd5#
- 1...Sxe4
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Sd1
- 2.Qd5#
- 1...Sa2
- 2.Qd5#
- 1...Se2
- 2.Qd5#
- 1...Sa4
- 2.Qd5#
- 1...Sb5
- 2.Qd5#
- 1...Sc1
- 2.Qa7#
- 1...Se1
- 2.Qa7#
- 1...Sf2
- 2.Qa7#
- 1...Sb4
- 2.Qa7#
- 1...Sf4
- 2.Qa7#
- 1...Se5
- 2.Qa7#
- 1...Sc5!
- 1...Sxb1
- 1.Qc6?
- 1...Sxb1
- 2.Qd5#
- 1...Sxe4
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Sc5
- 2.Qxc5#
- 1...Sd1
- 2.Qd5#
- 1...Sa2
- 2.Qd5#
- 1...Se2
- 2.Qd5#
- 1...Sa4
- 2.Qd5#
- 1...Sb5
- 2.Qd5#
- 1...Sc1
- 2.Qc5#
- 2.Qb6#
- 1...Se1
- 2.Qc5#
- 2.Qb6#
- 1...Sf2
- 2.Qc5#
- 2.Qb6#
- 1...Sb4
- 2.Qc5#
- 2.Qb6#
- 1...Sf4
- 2.Qc5#
- 2.Qb6#
- 1...Se5
- 2.Bc5#
- 2.Qc5#
- 2.Qb6#
- 1...dxc6!
- 1...Sxb1
- 1.Qb7?
- 1...Sxb1
- 2.Qd5#
- 1...Sxe4
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Sd1
- 2.Qd5#
- 1...Sa2
- 2.Qd5#
- 1...Se2
- 2.Qd5#
- 1...Sa4
- 2.Qd5#
- 1...Sb5
- 2.Qd5#
- 1...Sc1
- 2.Qb6#
- 2.Qa7#
- 1...Se1
- 2.Qb6#
- 2.Qa7#
- 1...Sf2
- 2.Qb6#
- 2.Qa7#
- 1...Sb4
- 2.Qb6#
- 2.Qa7#
- 1...Sf4
- 2.Qb6#
- 2.Qa7#
- 1...Se5
- 2.Qb6#
- 2.Qa7#
- 1...Sc5!
- 1...Sxb1
- 1.Qa7+?
- 1...Sc5
- 2.Qxc5#
- 1...Kxe4!
- 1...Sc5
- 1.Qh8+?
- 1...Se5
- 2.Qxe5#
- 1...Kxe4!
- 1...Se5
- 1.e5?
- 1...Sxb1
- 2.Qd5#
- 1...Sxe5
- 2.Qa7#
- 1...Sd5
- 2.Qxd5#
- 1...Sd1
- 2.Qd5#
- 1...Sa2
- 2.Qd5#
- 1...Se2
- 2.Qd5#
- 1...Sa4
- 2.Qd5#
- 1...Se4
- 2.Qd5#
- 1...Sb5
- 2.Qd5#
- 1...Sc1
- 2.Qa7#
- 1...Se1
- 2.Qa7#
- 1...Sf2
- 2.Qa7#
- 1...Sb4
- 2.Qa7#
- 1...Sf4
- 2.Qa7#
- 1...Sc5!
- 1...Sxb1
- 1.Kg7?
- Keys
- 1.Qg8!
- 1...Kxe4
- 2.Qg4#
- 1...Sxb1
- 2.Qd5#
- 1...Sxe4
- 2.Qd5#
- 1...Sc5
- 2.Qg1#
- 2.Qg7#
- 2.Qh8#
- 1...Sd1
- 2.Qd5#
- 1...Sa2
- 2.Qd5#
- 1...Se2
- 2.Qd5#
- 1...Sa4
- 2.Qd5#
- 1...Sb5
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Sc1
- 2.Qg1#
- 2.Qg7#
- 2.Qh8#
- 1...Se1
- 2.Qg1#
- 2.Qg7#
- 2.Qh8#
- 1...Sf2
- 2.Qg7#
- 2.Qh8#
- 1...Sb4
- 2.Qg1#
- 2.Qg7#
- 2.Qh8#
- 1...Sf4
- 2.Qg1#
- 2.Qg7#
- 2.Qh8#
- 1...Se5
- 2.Qg1#
- 1...Kxe4
- 1.Qg8!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 1
- Sets
- S(b);N_GUARD,XB(A)::QAR1(I)
- S(b);N_GUARD::QAR1(I)
- S(b);N_GUARD,XP(E)::QAR1(I)
- S(b);N_GUARD::QAR1(I),XS(b)
- S(c);N_GUARD::QAB(I)
- Tries
- Try
- K(H);P-FLIGHT
- Vars
- S(b);N_GUARD,XB(A)::QAR1(I)
- S(b);N_GUARD,XP(E)::QAR1(I)
- S(b);N_GUARD::QAR1(I),XS(b)
- S(b);N_GUARD::QAR1(I)
- S(c);N_GUARD::QAB(I)
- Refutation
- S(c);
- Try
- K(H);S_FLIGHT
- Vars
- S(b);N_GUARD,XB(A)::QAR1(I)
- S(b);N_GUARD,XP(E)::QAR1(I)
- S(b);N_GUARD::QAR1(I),XS(b)
- S(b);N_GUARD::QAR1(I)
- S(c);N_GUARD::QAB(I)
- Refutation
- S(c);
- Try
- K(H);P-FLIGHT
- Vars
- S(b);N_GUARD,XB(A)::QAR1(I)
- S(b);N_GUARD,XP(E)::QAR1(I)
- S(b);N_GUARD::QAR1(I),XS(b)
- S(b);N_GUARD::QAR1(I)
- S(c);N_GUARD::QAB(I)
- Refutation
- S(c);
- Try
- Q(I);
- Vars
- S(b);N_GUARD,XB(A)::QAR1(I)
- S(b);N_GUARD,XP(E)::QAR1(I)
- S(b);N_GUARD::QAR1(I),XS(b)
- S(c);N_GUARD::QAB1(I),XS(c)
- S(b);N_GUARD::QAR1(I)
- Refutation
- P(e);XQ(I)
- Try
- Q(I);
- Vars
- S(b);N_GUARD,XB(A)::QAR1(I)
- S(b);N_GUARD,XP(E)::QAR1(I)
- S(b);N_GUARD::QAR1(I),XS(b)
- S(b);N_GUARD::QAR1(I)
- Refutation
- S(c);
- Try
- Q(I);CHECK
- Vars
- S(c);N_GUARD,P_SPINS(c)::QAB1(I),XS(c)
- Refutation
- K(d);P-FLIGHT,P_SPINS(c),XP(E)
- Try
- Q(I);CHECK
- Vars
- S(c);N_GUARD,P_SPINS(c)::QAB1(I),XS(c)
- Refutation
- K(d);P-FLIGHT,P_SPINS(c),XP(E)
- Try
- P(E);
- Vars
- S(b);N_GUARD,XB(A)::QAR1(I)
- S(c);N_GUARD,XP(E)::QAB(I)
- S(b);N_GUARD::QAR1(I),XS(b)
- S(b);N_GUARD::QAR1(I)
- S(c);N_GUARD::QAB(I)
- Refutation
- S(c);
- Try
- Actual
- Q(I);
- Vars
- K(d);OGATEB,P-FLIGHT,P_SPINS(c),XP(E)::QAR2(I)
- S(b);N_GUARD,XB(A)::QAR1(I)
- S(b);N_GUARD,XP(E)::QAR1(I)
- S(b);N_GUARD::QAR1(I)
- S(b);N_GUARD::QAR1(I),XS(b)
- S(c);N_GUARD::QAB(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).