MESON Chess Problem Database
Problem Display
PID: 7455 (R7/2pN4/2P4b/1p6/1k3q1Q/1B3R2/P1n4p/7K w - - 0 1)
Hoffmann, Fritz
Freie Presse, 1990
#2
8 + 7
SOLUTION
- SOUND
- Sets
- 1...Qg4
- 2.Qe7#
- 1...Sa1
- 2.a3#
- 1...Se1
- 2.a3#
- 1...Se3
- 2.Qe1#
- 1...Sd4
- 2.a3#
- 1...Qg4
- Tries
- 1.Bd5?
- threat
- 2.Rb3#
- 1...Se3
- 2.Qe1#
- 1...Sa1
- 2.a3#
- 1...Sd4
- 2.a3#
- 1...Qe4!
- threat
- 1.Bf7?
- threat
- 2.Rb3#
- 1...Se3
- 2.Qe1#
- 1...Sa1
- 2.a3#
- 1...Sd4
- 2.a3#
- 1...Qe4!
- threat
- 1.Bg8?
- threat
- 2.Rb3#
- 1...Se3
- 2.Qe1#
- 1...Sa1
- 2.a3#
- 1...Sd4
- 2.a3#
- 1...Qe4!
- threat
- 1.Qe1+?
- 1...Sxe1
- 2.a3#
- 1...Qd2!
- 1...Sxe1
- 1.Qxf4+?
- 1...Sd4
- 2.Qxd4#
- 2.a3#
- 1...Bxf4!
- 1...Sd4
- 1.Bd5?
- Keys
- 1.Be6!
- threat
- 2.Rb3#
- 1...Se3
- 2.Qe1#
- 1...Qe4
- 2.Qe7#
- 1...Sa1
- 2.a3#
- 1...Sd4
- 2.a3#
- threat
- 1.Be6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 2
- Sets
- Q(d);N_GUARD::QAB(E)
- S(a);N_GUARD::P(B)
- S(a);N_GUARD::QAB(E)
- S(a);N_GUARD,N_SPINQ(d)::P(B)
- Tries
- Try
- B(C);
- Threat
- R1(D)
- Vars
- S(a);N_GUARD::QAB(E)
- S(a);N_GUARD::P(B)
- S(a);N_GUARD,N_SPINQ(d)::P(B)
- Refutation
- Q(d);P_PINR(D)
- Try
- B(C);
- Threat
- R1(D)
- Vars
- S(a);N_GUARD::QAB(E)
- S(a);N_GUARD::P(B)
- S(a);N_GUARD,N_SPINQ(d)::P(B)
- Refutation
- Q(d);P_PINR(D)
- Try
- B(C);
- Threat
- R1(D)
- Vars
- S(a);N_GUARD::QAB(E)
- S(a);N_GUARD::P(B)
- S(a);N_GUARD,N_SPINQ(d)::P(B)
- Refutation
- Q(d);P_PINR(D)
- Try
- Q(E);CHECK,N_PINQ(d)
- Vars
- S(a);XQ(E)::P(B)
- Refutation
- Q(d);P_SPINQ(d)
- Try
- Q(E);CHECK,XQ(d)
- Refutation
- B(f);XQ(E)
- Try
- Actual
- B(C);
- Threat
- R1(D)
- Vars
- S(a);N_GUARD::QAB(E)
- Q(d);N_GUARD,P_PINR(D)::QAB(E)
- S(a);N_GUARD::P(B)
- S(a);N_GUARD,N_SPINQ(d)::P(B)
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).