MESON Chess Problem Database
Problem Display
PID: 233770 (3Q4/rp4pq/2pNR3/7b/5p2/PN1k4/1P6/1K2R3 w - - 0 1)
Rothwell, Stephen
Freie Presse, 1990
#2
8 + 8
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Bd1
- 2.Rxd1#
- 1...Bg6
- 2.Rd1#
- 1...Bf7
- 2.Rd1#
- 1...Be8
- 2.Rd1#
- 1...f3
- 2.Rd1#
- 2.R1e3#
- 2.R6e3#
- 1...Bd1
- Tries
- 1.Sc1+?
- 1...Kd2+
- 2.Sf5#
- 1...Kd4+!
- 1...Kd2+
- 1.Sa5?
- threat
- 2.Sdc4#
- 2.Se4#
- 2.Sb5#
- 2.Sf5#
- 2.Sdxb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Kd2+
- 2.Sf5#
- 1...Kd4+
- 2.Se4#
- 1...Qe4
- 2.Sxe4#
- 1...Qf5
- 2.Sxf5#
- 1...Qg8
- 2.Se8#
- 1...Qh8
- 2.Se8#
- 1...Ra8
- 2.Sc8#
- 1...Be2
- 2.Sdc4#
- 2.Sb5#
- 2.Sf5#
- 2.Sdxb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Bf3
- 2.Se4#
- 1...Bf7
- 2.Sdc4#
- 2.Se4#
- 2.Sb5#
- 2.Sf5#
- 2.Sdxb7#
- 2.Sxf7#
- 2.Sc8#
- 2.Se8#
- 2.Rd1#
- 1...Be8
- 2.Sxe8#
- 2.Rd1#
- 1...b5
- 2.Sdb7#
- 1...b6
- 2.Sdb7#
- 1...g5
- 2.Sf7#
- 1...g6
- 2.Sf7#
- 1...Rxa5!
- threat
- 1.Sc5+?
- 1...Kd2+
- 2.Sf5#
- 1...Kd4+!
- 1...Kd2+
- 1.Rc1?
- threat
- 2.Sc4#
- 2.Sb5#
- 2.Sf5#
- 2.Sxb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 2.Rc3#
- 1...Qf5
- 2.Sxf5#
- 2.Rc3#
- 1...Qg8
- 2.Se8#
- 2.Rc3#
- 1...Qh8
- 2.Se8#
- 2.Rc3#
- 1...Ra4
- 2.Sc4#
- 2.Rc3#
- 1...Ra5
- 2.Sb5#
- 2.Rc3#
- 1...Ra8
- 2.Sc8#
- 2.Rc3#
- 1...Bf3
- 2.Rc3#
- 1...Bf7
- 2.Sc4#
- 2.Sb5#
- 2.Sf5#
- 2.Sxb7#
- 2.Sxf7#
- 2.Sc8#
- 2.Se8#
- 2.Rd1#
- 2.Rc3#
- 1...Be8
- 2.Sxe8#
- 2.Rd1#
- 2.Rc3#
- 1...b5
- 2.Sb7#
- 2.Rc3#
- 1...b6
- 2.Sb7#
- 2.Rc3#
- 1...g5
- 2.Sf7#
- 2.Rc3#
- 1...g6
- 2.Sf7#
- 2.Rc3#
- 1...Qe4!
- threat
- 1.R1e4?
- threat
- 2.Sc4#
- 2.Sb5#
- 2.Sf5#
- 2.Sxb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 2.Rd4#
- 1...Qf5
- 2.Sxf5#
- 2.Rd4#
- 1...Qg8
- 2.Se8#
- 2.Rd4#
- 1...Qh8
- 2.Se8#
- 2.Rd4#
- 1...Ra4
- 2.Sc4#
- 1...Ra5
- 2.Sb5#
- 2.Rd4#
- 1...Ra8
- 2.Sc8#
- 2.Rd4#
- 1...Bf7
- 2.Sc4#
- 2.Sb5#
- 2.Sf5#
- 2.Sxb7#
- 2.Sxf7#
- 2.Sc8#
- 2.Se8#
- 2.Rd4#
- 1...Be8
- 2.Sxe8#
- 2.Rd4#
- 1...c5
- 2.Sc4#
- 2.Sb5#
- 2.Sf5#
- 2.Sxb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...b5
- 2.Sb7#
- 2.Rd4#
- 1...b6
- 2.Sb7#
- 2.Rd4#
- 1...g5
- 2.Sf7#
- 2.Rd4#
- 1...g6
- 2.Sf7#
- 2.Rd4#
- 1...Qxe4!
- threat
- 1.Qf6?
- threat
- 2.Qc3#
- 2.Qd4#
- 1...Qe4
- 2.Qc3#
- 1...Ra4
- 2.Qc3#
- 1...c5
- 2.Qc3#
- 1...gxf6!
- threat
- 1.Sc1+?
- Keys
- 1.Sd2!
- threat
- 2.S6c4#
- 2.S6e4#
- 2.Sb5#
- 2.Sf5#
- 2.Sxb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Kxd2+
- 2.Sf5#
- 1...Kd4+
- 2.S6e4#
- 1...Qe4
- 2.S6xe4#
- 1...Qf5
- 2.Sxf5#
- 1...Qg8
- 2.Se8#
- 1...Qh8
- 2.Se8#
- 1...Ra4
- 2.S6c4#
- 1...Ra5
- 2.Sb5#
- 1...Ra8
- 2.Sc8#
- 1...Be2
- 2.S6c4#
- 2.Sb5#
- 2.Sf5#
- 2.Sxb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Bf3
- 2.S6e4#
- 1...Bf7
- 2.S6c4#
- 2.S6e4#
- 2.Sb5#
- 2.Sf5#
- 2.Sxb7#
- 2.Sxf7#
- 2.Sc8#
- 2.Se8#
- 1...Be8
- 2.Sxe8#
- 1...b5
- 2.Sb7#
- 1...b6
- 2.Sb7#
- 1...g5
- 2.Sf7#
- 1...g6
- 2.Sf7#
- threat
- 1.Sd2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 14
- REMOVED MATES = 3
- Sets
- B(c);N_GUARD::R(B),XB(c)
- B(c);N_GUARD::R(B)
- Tries
- Try
- S(E);CHECK
- Vars
- K(a);CHECK,P-FLIGHT::QAR(H)+S(F)
- Refutation
- K(a);CHECK,P-FLIGHT
- Try
- S(E);
- Threat
- DUALS(8)
- Vars
- K(a);CHECK,P-FLIGHT::QAR(H)+S(F)
- Q(h);::QAR(H)+S(F),XQ(h)
- Q(h);::QAR(H)+S(F)
- R(e);::QAR(H)+S(F)
- B(c);::QAR(H)+S(F)
- P(f);::QAR(H)+S(F)
- P(g);::QAR(H)+S(F)
- Refutation
- R(e);XS(E)
- Try
- S(E);CHECK
- Vars
- K(a);CHECK,P-FLIGHT::QAR(H)+S(F)
- Refutation
- K(a);CHECK,P-FLIGHT
- Try
- R(B);
- Threat
- DUALS(8)
- Vars
- B(c);::R1(B)
- Refutation
- Q(h);
- Try
- R(B);
- Threat
- DUALS(8)
- Vars
- R(e);::QAR(H)+S(F)
- Refutation
- Q(h);XR(B)
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- Q(h);::QAR1(H)
- R(e);::QAR1(H)
- P(d);::QAR1(H)
- Refutation
- P(g);XQ(H)
- Try
- Actual
- S(E);
- Threat
- DUALS(8)
- Vars
- K(a);CHECK,P-FLIGHT,XS(E)::QAR(H)+S(F)
- K(a);CHECK,P-FLIGHT::QAR(H)+S(F)
- Q(h);::QAR(H)+S(F),XQ(h)
- Q(h);::QAR(H)+S(F)
- R(e);::QAR(H)+S(F)
- B(c);::QAR(H)+S(F)
- B(c);::QAR(H)+S(F),XB(c)
- P(f);::QAR(H)+S(F)
- P(g);::QAR(H)+S(F)
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).