MESON Chess Problem Database
Problem Display
PID: 102534 (RQ1b4/3Pk3/4P3/1n5N/1p5K/1B2p3/4Pn2/5R2 w - - 0 1)
Saferis, AM
Europe Echecs, 1963
#2
9 + 6
| 6490 | yacpdb | 2009 |
| 5454 | Near Snap | 2010 |
SOLUTION
- SOUND
- Sets
- 1...Kf8+
- 2.Qxd8#
- 1...Ba5
- 2.Qf8#
- 1...Bb6
- 2.Qf8#
- 1...Bc7
- 2.Qf8#
- 1...Sd1
- 2.Rf7#
- 1...Sh1
- 2.Rf7#
- 1...Sd3
- 2.Rf7#
- 1...Sh3
- 2.Rf7#
- 1...Se4
- 2.Rf7#
- 1...Sg4
- 2.Rf7#
- 1...Sa3
- 2.Qxb4#
- 1...Sc3
- 2.Qxb4#
- 1...Sd4
- 2.Qxb4#
- 1...Sd6
- 2.Qxd8#
- 1...Sa7
- 2.Qxb4#
- 1...Sc7
- 2.Qxb4#
- 1...Kf8+
- Tries
- 1.Ba2?
- 1...Kf8+
- 2.Qxd8#
- 1...Sc7
- 2.Qxb4#
- 1...Ba5
- 2.Qf8#
- 1...Bb6
- 2.Qf8#
- 1...Bc7
- 2.Qf8#
- 1...Sd1
- 2.Rf7#
- 1...Sh1
- 2.Rf7#
- 1...Sd3
- 2.Rf7#
- 1...Sh3
- 2.Rf7#
- 1...Se4
- 2.Rf7#
- 1...Sg4
- 2.Rf7#
- 1...Sa3
- 2.Qxb4#
- 1...Sc3
- 2.Qxb4#
- 1...Sd4
- 2.Qxb4#
- 1...Sd6
- 2.Qxd8#
- 1...Sa7
- 2.Qxb4#
- 1...b3!
- 1...Kf8+
- 1.Bc4?
- 1...Kf8+
- 2.Qxd8#
- 1...Sc7
- 2.Qxb4#
- 1...Ba5
- 2.Qf8#
- 1...Bb6
- 2.Qf8#
- 1...Bc7
- 2.Qf8#
- 1...Sd1
- 2.Rf7#
- 1...Sh1
- 2.Rf7#
- 1...Sd3
- 2.Rf7#
- 1...Sh3
- 2.Rf7#
- 1...Se4
- 2.Rf7#
- 1...Sg4
- 2.Rf7#
- 1...Sa3
- 2.Qxb4#
- 1...Sc3
- 2.Qxb4#
- 1...Sd4
- 2.Qxb4#
- 1...Sd6
- 2.Qxd8#
- 1...Sa7
- 2.Qxb4#
- 1...b3!
- 1...Kf8+
- 1.Bd5?
- 1...Kf8+
- 2.Qxd8#
- 1...Sc7
- 2.Qxb4#
- 1...Ba5
- 2.Qf8#
- 1...Bb6
- 2.Qf8#
- 1...Bc7
- 2.Qf8#
- 1...Sd1
- 2.Rf7#
- 1...Sh1
- 2.Rf7#
- 1...Sd3
- 2.Rf7#
- 1...Sh3
- 2.Rf7#
- 1...Se4
- 2.Rf7#
- 1...Sg4
- 2.Rf7#
- 1...Sa3
- 2.Qxb4#
- 1...Sc3
- 2.Qxb4#
- 1...Sd4
- 2.Qxb4#
- 1...Sd6
- 2.Qxd8#
- 1...Sa7
- 2.Qxb4#
- 1...b3!
- 1...Kf8+
- 1.Rxf2?
- threat
- 2.Rf7#
- 1...Bc7
- 2.Qf8#
- 1...Sc7
- 2.Qxb4#
- 1...Sd6
- 2.Qxd8#
- 1...exf2!
- threat
- 1.Ra6?
- 1...Kf8+
- 2.Qxd8#
- 1...Sd1
- 2.Rf7#
- 1...Ba5
- 2.Qe8#
- 1...Bc7
- 2.Qe8#
- 1...Sh1
- 2.Rf7#
- 1...Sd3
- 2.Rf7#
- 1...Sh3
- 2.Rf7#
- 1...Se4
- 2.Rf7#
- 1...Sg4
- 2.Rf7#
- 1...Sa3
- 2.Qd6#
- 2.Qxb4#
- 1...Sc3
- 2.Qd6#
- 2.Qxb4#
- 1...Sd4
- 2.Qd6#
- 2.Qxb4#
- 1...Sd6
- 2.Qxd6#
- 1...Sa7
- 2.Qd6#
- 2.Qxb4#
- 1...Sc7
- 2.Qxb4#
- 1...Bb6!
- 1...Kf8+
- 1.Ra7?
- 1...Kf8+
- 2.Qxd8#
- 1...Sxa7
- 2.Qxb4#
- 1...Sc7
- 2.Qxb4#
- 1...Sd1
- 2.Rf7#
- 1...Ba5
- 2.d8Q#
- 1...Bb6
- 2.d8Q#
- 1...Bc7
- 2.d8Q#
- 1...Sh1
- 2.Rf7#
- 1...Sd3
- 2.Rf7#
- 1...Sh3
- 2.Rf7#
- 1...Se4
- 2.Rf7#
- 1...Sg4
- 2.Rf7#
- 1...Sa3
- 2.Qxb4#
- 1...Sc3
- 2.Qxb4#
- 1...Sd4
- 2.Qxb4#
- 1...Sd6!
- 1...Kf8+
- 1.Qf4?
- 1...Sd1
- 2.Qf8#
- 1...Ba5
- 2.Re8#
- 2.Qf8#
- 1...Bb6
- 2.Re8#
- 2.Qf8#
- 1...Bc7
- 2.Re8#
- 2.Qf8#
- 1...Sh1
- 2.Qf8#
- 1...Sd3
- 2.Qf8#
- 1...Sh3
- 2.Qf8#
- 1...Se4
- 2.Qf8#
- 1...Sg4
- 2.Qf8#
- 1...Sa3
- 2.Qxb4#
- 1...Sc3
- 2.Qxb4#
- 1...Sd6
- 2.Qf6#
- 1...Sa7
- 2.Qxb4#
- 1...Sc7
- 2.Qxb4#
- 1...Sd4!
- 1...Sd1
- 1.Qb6?
- 1...Kf8+
- 2.Qxd8#
- 1...Sd1
- 2.Rf7#
- 1...Bc7
- 2.Re8#
- 1...Sh1
- 2.Rf7#
- 1...Sd3
- 2.Rf7#
- 1...Sh3
- 2.Rf7#
- 1...Se4
- 2.Rf7#
- 1...Sg4
- 2.Rf7#
- 1...Sa3
- 2.Qc5#
- 2.Qxb4#
- 1...Sc3
- 2.Qc5#
- 2.Qxb4#
- 1...Sd4
- 2.Qc5#
- 2.Qxb4#
- 1...Sd6
- 2.Qxd8#
- 1...Sa7
- 2.Qc5#
- 2.Qxb4#
- 1...Sc7
- 2.Qc5#
- 2.Qxb4#
- 1...Bxb6!
- 1...Kf8+
- 1.Ba2?
- Keys
- 1.Qe5!
- 1...Kf8+
- 2.e7#
- 1...Sd1
- 2.Rf7#
- 1...Ba5
- 2.Re8#
- 1...Bb6
- 2.Re8#
- 1...Bc7
- 2.Re8#
- 1...Sh1
- 2.Rf7#
- 1...Sd3
- 2.Rf7#
- 1...Sh3
- 2.Rf7#
- 1...Se4
- 2.Rf7#
- 1...Sg4
- 2.Rf7#
- 1...Sa3
- 2.Qc5#
- 1...Sc3
- 2.Qc5#
- 1...Sd4
- 2.Qc5#
- 1...Sd6
- 2.Qf6#
- 1...Sa7
- 2.Qc5#
- 1...Sc7
- 2.Qc5#
- 1...Kf8+
- 1.Qe5!
Anticipated by 78549(1949)
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 10
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- K(e);CHECK,P_SPINB(f),P_SPINS(a),S_FLIGHT::QAR2(I),XB(f)
- B(f);OGATE::QAB1(I)
- S(a);OGATE::R1(A)
- S(d);OGATE::QAB(I),XP(c)
- S(d);SBLOCK::QAB1(I),XB(f)
- Tries
- Try
- B(C);
- Vars
- K(e);CHECK,P_SPINB(f),P_SPINS(a),S_FLIGHT::QAR2(I),XB(f)
- S(d);OGATE::QAB(I),XP(c)
- B(f);OGATE::QAB1(I)
- S(a);OGATE::R1(A)
- S(d);SBLOCK::QAB1(I),XB(f)
- Refutation
- P(c);
- Try
- B(C);
- Vars
- K(e);CHECK,P_SPINB(f),P_SPINS(a),S_FLIGHT::QAR2(I),XB(f)
- S(d);OGATE::QAB(I),XP(c)
- B(f);OGATE::QAB1(I)
- S(a);OGATE::R1(A)
- S(d);SBLOCK::QAB1(I),XB(f)
- Refutation
- P(c);
- Try
- B(C);
- Vars
- K(e);CHECK,P_SPINB(f),P_SPINS(a),S_FLIGHT::QAR2(I),XB(f)
- S(d);OGATE::QAB(I),XP(c)
- B(f);OGATE::QAB1(I)
- S(a);OGATE::R1(A)
- S(d);SBLOCK::QAB1(I),XB(f)
- Refutation
- P(c);
- Try
- R(A);XS(a)
- Threat
- R1(A)
- Vars
- B(f);OGATE::QAB1(I)
- S(d);OGATE::QAB(I),XP(c)
- S(d);SBLOCK::QAB1(I),XB(f)
- Refutation
- P(b);XR(A)
- Try
- R(H);
- Vars
- K(e);CHECK,P_SPINB(f),P_SPINS(a),S_FLIGHT::QAR2(I),XB(f)
- S(a);OGATE::R1(A)
- B(f);OGATE::QAR1(I)
- S(d);N_GUARD::QAB1(I),XS(d)
- S(d);OGATE::QAB(I),XP(c)
- Refutation
- B(f);
- Try
- R(H);
- Vars
- K(e);CHECK,P_SPINB(f),P_SPINS(a),S_FLIGHT::QAR2(I),XB(f)
- S(d);OGATE,XR(H)::QAB(I),XP(c)
- S(d);OGATE::QAB(I),XP(c)
- S(a);OGATE::R1(A)
- B(f);OGATE::P=Q
- Refutation
- S(d);
- Try
- Q(I);
- Vars
- S(a);::QAB1(I)
- S(d);N_GUARD::QAB(I),XP(c)
- S(d);SBLOCK::QAB1(I)
- Refutation
- S(d);
- Try
- Q(I);
- Vars
- K(e);CHECK,P_SPINB(f),P_SPINS(a),S_FLIGHT::QAR2(I),XB(f)
- S(a);OGATE::R1(A)
- B(f);OGATE::R1(H)
- S(d);SBLOCK::QAB1(I),XB(f)
- Refutation
- B(f);XQ(I)
- Try
- Actual
- Q(I);
- Vars
- K(e);CHECK,OGATE,P_SPINB(f),P_SPINS(a),S_FLIGHT::P(F)
- S(a);OGATE::R1(A)
- B(f);OGATE::R1(H)
- S(d);N_GUARD::QAB(I)
- S(d);SBLOCK::QAB1(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).