MESON Chess Problem Database
Problem Display
PID: 52581 (1B5b/4p3/1Np1k1K1/5N2/3P2Q1/8/5R2/1q6 w - - 0 1)
Sonnenfeld, Felix Alexander
3rd HM., Boletim da UBP, 1966
#2
7 + 5
| 5309 | O Mosqueteiro do Rei | 1997 |
SOLUTION
- SOUND
- Sets
- 1...Qa2
- 2.Se3#
- 2.Sg3#
- 2.Sh4#
- 2.Sd6#
- 2.Sh6#
- 2.Sg7#
- 1...Qxf5+
- 2.Qxf5#
- 1...Qa1
- 2.Se3#
- 2.Sg3#
- 2.Sh4#
- 2.Sd6#
- 2.Sh6#
- 2.Sg7#
- 1...Qc1
- 2.Se3#
- 2.Sg3#
- 2.Sh4#
- 2.Sd6#
- 2.Sh6#
- 2.Sg7#
- 1...Qd1
- 2.Sg7#
- 1...Qe1
- 2.Se3#
- 2.Sg3#
- 2.Sh4#
- 2.Sd6#
- 2.Sh6#
- 2.Sg7#
- 1...Qf1
- 2.Se3#
- 2.Sg3#
- 2.Sh4#
- 2.Sd6#
- 2.Sh6#
- 2.Sg7#
- 1...Qg1
- 2.Sg3#
- 2.Sg7#
- 1...Qh1
- 2.Se3#
- 2.Sg3#
- 2.Sh4#
- 2.Sd6#
- 2.Sh6#
- 2.Sg7#
- 1...Qb2
- 2.Se3#
- 2.Sg3#
- 2.Sh4#
- 2.Sd6#
- 2.Sh6#
- 2.Sg7#
- 1...Qb3
- 2.Se3#
- 2.Sg3#
- 2.Sh4#
- 2.Sd6#
- 2.Sh6#
- 2.Sg7#
- 1...Qb4
- 2.Se3#
- 2.Sg3#
- 2.Sh4#
- 2.Sd6#
- 2.Sh6#
- 2.Sg7#
- 1...Qb5
- 2.Sg7#
- 1...Qxb6
- 2.Se3#
- 1...c5
- 2.d5#
- 1...Qa2
- Tries
- 1.Kh5?
- threat
- 2.Sg7#
- 1...Qxf5+
- 2.Qxf5#
- 1...Qh1+
- 2.Sh4#
- 1...Kf6
- 2.Qg6#
- 1...Kf7
- 2.Sd6#
- 1...Qxb6
- 2.Se3#
- 1...Bf6
- 2.Qg8#
- 1...Bg7
- 2.Sxg7#
- 1...Qb5!
- threat
- 1.Rc2?
- threat
- 2.Se3#
- 2.Sg3#
- 2.Sh4#
- 2.Sd6#
- 2.Sh6#
- 2.Sg7#
- 2.Rxc6#
- 1...Qxb6
- 2.Se3#
- 1...Bxd4
- 2.Se3#
- 2.Sg3#
- 2.Sxd4#
- 2.Sh4#
- 2.Sh6#
- 2.Sg7#
- 2.Rxc6#
- 1...Qc1
- 2.Se3#
- 2.Sg3#
- 2.Sh4#
- 2.Sd6#
- 2.Sh6#
- 2.Sg7#
- 1...Qd1
- 2.Sg7#
- 2.Rxc6#
- 1...Qf1
- 2.Sg7#
- 2.Rxc6#
- 1...Qg1
- 2.Sg3#
- 2.Sg7#
- 2.Rxc6#
- 1...Qh1
- 2.Se3#
- 2.Sg3#
- 2.Sh4#
- 2.Sd6#
- 2.Sh6#
- 2.Sg7#
- 1...Qb4
- 2.Se3#
- 2.Sg3#
- 2.Sh4#
- 2.Sd6#
- 2.Sh6#
- 2.Sg7#
- 1...Qb5
- 2.Sg7#
- 1...Be5
- 2.Se3#
- 2.Sg3#
- 2.Sh4#
- 2.Sd6#
- 2.Sh6#
- 2.Sg7#
- 1...Bg7
- 2.Se3#
- 2.Sg3#
- 2.Sh4#
- 2.Sd6#
- 2.Sh6#
- 2.Sxg7#
- 2.Rxc6#
- 1...c5
- 2.Se3#
- 2.Sg3#
- 2.Sh4#
- 2.Sd6#
- 2.Sh6#
- 2.Sg7#
- 2.d5#
- 1...Qxc2!
- threat
- 1.Re2+?
- 1...Be5
- 2.Rxe5#
- 1...Qe4!
- 1...Be5
- 1.Qe2+?
- 1...Be5
- 2.Qc4#
- 2.Qxe5#
- 1...Qe4!
- 1...Be5
- 1.Qe4+?
- 1...Be5
- 2.Sg7#
- 2.Qxe5#
- 1...Qxe4!
- 1...Be5
- 1.Kh5?
- Keys
- 1.Kh6!
- threat
- 2.Sg7#
- 1...Qc1+
- 2.Se3#
- 1...Qh1+
- 2.Sh4#
- 1...Bg7+
- 2.Sxg7#
- 1...Kf6
- 2.Qg6#
- 1...Kf7
- 2.Sd6#
- 1...Qxf5
- 2.Qxf5#
- 1...Qxb6
- 2.Se3#
- 1...Bf6
- 2.Qg8#
- threat
- 1.Kh6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 3
- Sets
- Q(a);CHECK,OGATE,P_SPINQ(a),XS(D)::QAB1(C),XQ(a)
- Q(a);N_PINS(D)::QAB(C)+S(D),DCHECK
- Q(a);N_PINS(D),XS(E)::QAB(C)+S(D)
- P(b);N_GUARD::P(B)
- Tries
- Try
- K(F);N_SPINS(D),S_FLIGHT
- Threat
- QAB(C)+S(D),DCHECK
- Vars
- Q(a);CHECK,OGATE,P_SPINQ(a),XS(D)::QAB1(C),XQ(a)
- Q(a);CHECK,N_GUARD::QAB(C)+S(D)
- K(c);P-FLIGHT::QAR1(C)
- K(c);S_FLIGHT::R(A)+S(D),DCHECK
- Q(a);N_GUARD,XS(E)::QAB(C)+S(D)
- B(e);SBLOCK::QAB(C)
- B(e);::QAB(C)+S(D),DCHECK,XB(e)
- Refutation
- Q(a);P_PINS(D)
- Try
- R(A);N_SPINS(D)
- Threat
- DUALS(7)
- Vars
- Q(a);XS(E)::QAB(C)+S(D)
- Q(a);::QAB(C)+S(D),DCHECK
- Refutation
- Q(a);P_PINS(D),XR(A)
- Try
- R(A);CHECK
- Vars
- B(e);N_GUARD,P_SPINB(e)::R1(A),XB(e)
- Refutation
- Q(a);P_SPINQ(a)
- Try
- Q(C);CHECK
- Refutation
- Q(a);P_SPINQ(a)
- Try
- Q(C);CHECK,N_SPINS(D)
- Refutation
- Q(a);P_PINS(D),XQ(C)
- Try
- Actual
- K(F);N_SPINS(D),P-FLIGHT
- Threat
- QAB(C)+S(D),DCHECK
- Vars
- Q(a);CHECK,N_GUARD::QAB(C)+S(D)
- B(e);CHECK::QAB(C)+S(D),DCHECK,XB(e)
- K(c);P-FLIGHT::QAR1(C)
- K(c);S_FLIGHT::R(A)+S(D),DCHECK
- Q(a);OGATE,P_SPINQ(a),XS(D)::QAB1(C),XQ(a)
- Q(a);N_GUARD,XS(E)::QAB(C)+S(D)
- B(e);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).