MESON Chess Problem Database
Problem Display
PID: 206529 (8/N7/4p3/2Bk4/1P6/1pQ1pP2/1Kn1P3/8 w - - 0 1)
Sonnenfeld, Pal
Nepszava, 1925
#2
7 + 5
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Sa1
- 2.Qd4#
- 1...Se1
- 2.Qd4#
- 1...Sa3
- 2.Qd4#
- 1...Sxb4
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...e5
- 2.Qxb3#
- 1...Sa1
- Tries
- 1.Kc1?
- 1...Sxb4
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...e5
- 2.Qxb3#
- 1...Sa1
- 2.Qd4#
- 1...Se1
- 2.Qd4#
- 1...Sa3
- 2.Qd4#
- 1...b2+!
- 1...Sxb4
- 1.Kxb3?
- 1...Sd4+
- 2.Qxd4#
- 1...Sxb4
- 2.Qd4#
- 1...e5
- 2.Qc4#
- 1...Se1
- 2.Qd4#
- 1...Sa3
- 2.Qd4#
- 1...Sa1+!
- 1...Sd4+
- 1.Bxe3?
- threat
- 2.Qc5#
- 1...e5
- 2.Qc6#
- 1...Kd6!
- threat
- 1.Bb6?
- threat
- 2.Qc5#
- 1...e5
- 2.Qc6#
- 1...Kd6!
- threat
- 1.Qe5+?
- 1...Kc4
- 2.Qxe6#
- 1...Kxe5!
- 1...Kc4
- 1.Qg7?
- 1...Sxb4
- 2.Qd4#
- 1...e5
- 2.Qf7#
- 2.Qg8#
- 1...Sa1
- 2.Qd4#
- 1...Se1
- 2.Qd4#
- 1...Sa3
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Kc4!
- 1...Sxb4
- 1.Qh8?
- 1...Sxb4
- 2.Qd4#
- 1...e5
- 2.Qg8#
- 1...Sa1
- 2.Qd4#
- 1...Se1
- 2.Qd4#
- 1...Sa3
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Kc4!
- 1...Sxb4
- 1.Qd3+?
- 1...Sd4
- 2.Qxd4#
- 1...Ke5!
- 1...Sd4
- 1.Qxe3?
- threat
- 2.Qe4#
- 1...Kc4
- 2.Qxb3#
- 2.Qd3#
- 2.Qxe6#
- 1...Sxb4
- 2.Qd4#
- 1...e5
- 2.Qxb3#
- 1...Sd4
- 2.Qxd4#
- 1...Sxe3!
- threat
- 1.f4?
- 1...Ke4
- 2.Qe5#
- 1...Sxb4
- 2.Qd4#
- 1...Sa1
- 2.Qd4#
- 2.Qd3#
- 1...Se1
- 2.Qd4#
- 1...Sa3
- 2.Qd4#
- 2.Qd3#
- 1...Sd4
- 2.Qxd4#
- 1...e5!
- 1...Ke4
- 1.b5?
- 1...Sd4
- 2.Qxd4#
- 1...Sa1
- 2.Qd4#
- 1...Se1
- 2.Qd4#
- 1...Sa3
- 2.Qd4#
- 1...Sb4
- 2.Qd4#
- 1...e5!
- 1...Sd4
- 1.Kc1?
- Keys
- 1.Qf6!
- 1...Kc4
- 2.Qxe6#
- 1...Sxb4
- 2.Qd4#
- 1...Sa1
- 2.Qd4#
- 1...Se1
- 2.Qd4#
- 1...Sa3
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...e5
- 2.Qf7#
- 1...Kc4
- 1.Qf6!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- S(a);N_GUARD::QAR1(C)
- S(a);N_GUARD,XP(E)::QAR1(C)
- S(a);N_GUARD::QAR1(C),XS(a)
- P(e);SBLOCK::QAB(C),XP(b)
- Tries
- Try
- K(A);S_FLIGHT
- Vars
- S(a);N_GUARD,XP(E)::QAR1(C)
- S(a);N_GUARD::QAR1(C),XS(a)
- P(e);SBLOCK::QAB(C),XP(b)
- S(a);N_GUARD::QAR1(C)
- Refutation
- P(b);CHECK
- Try
- K(A);P-FLIGHT,XP(b)
- Vars
- S(a);CHECK,N_GUARD::QAR1(C),XS(a)
- S(a);N_GUARD,XP(E)::QAR1(C)
- P(e);SBLOCK::QAB1(C)
- S(a);N_GUARD::QAR1(C)
- Refutation
- S(a);CHECK
- Try
- B(F);XP(c)
- Threat
- QAR1(C)
- Vars
- P(e);SBLOCK::QAB1(C)
- Refutation
- K(d);P-FLIGHT
- Try
- B(F);
- Threat
- QAR1(C)
- Vars
- P(e);SBLOCK::QAB1(C)
- Refutation
- K(d);P-FLIGHT
- Try
- Q(C);CHECK
- Vars
- K(d);S_FLIGHT::QAB(C),XP(e)
- Refutation
- K(d);P-FLIGHT,XQ(C)
- Try
- Q(C);
- Vars
- S(a);N_GUARD,XP(E)::QAR1(C)
- S(a);N_GUARD::QAR1(C)
- S(a);N_GUARD::QAR1(C),XS(a)
- Refutation
- K(d);S_FLIGHT
- Try
- Q(C);
- Vars
- S(a);N_GUARD,XP(E)::QAR1(C)
- P(e);OGATEB,SBLOCK::QAB(C)
- S(a);N_GUARD::QAR1(C)
- S(a);N_GUARD::QAR1(C),XS(a)
- Refutation
- K(d);S_FLIGHT
- Try
- Q(C);CHECK
- Vars
- S(a);N_GUARD,P_SPINS(a)::QAR1(C),XS(a)
- Refutation
- K(d);P-FLIGHT
- Try
- Q(C);XP(c)
- Threat
- QAB1(C)
- Vars
- S(a);N_GUARD,XP(E)::QAR1(C)
- P(e);SBLOCK::QAB(C),XP(b)
- S(a);N_GUARD::QAR1(C),XS(a)
- Refutation
- S(a);XQ(C)
- Try
- P(D);
- Vars
- K(d);S_FLIGHT::QAR1(C)
- S(a);N_GUARD,XP(E)::QAR1(C)
- S(a);N_GUARD::QAR1(C)
- S(a);N_GUARD::QAR1(C),XS(a)
- Refutation
- P(e);
- Try
- P(E);
- Vars
- S(a);N_GUARD::QAR1(C),XS(a)
- S(a);N_GUARD::QAR1(C)
- Refutation
- P(e);
- Try
- Actual
- Q(C);
- Vars
- K(d);S_FLIGHT::QAB(C),XP(e)
- S(a);N_GUARD,XP(E)::QAR1(C)
- S(a);N_GUARD::QAR1(C)
- S(a);N_GUARD::QAR1(C),XS(a)
- P(e);OGATEB,SBLOCK::QAB(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).