MESON Chess Problem Database
Problem Display
PID: 187783 (7K/8/2p1P3/2N4Q/3k4/1Rq1N3/2R3P1/8 w - - 0 1)
Brenander, Oskar Wilhelm
The Times, 1909
#2
8 + 3
| 6490 | yacpdb | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Kxe3+
- 2.Qe5#
- 1...Qa1
- 2.Rd2#
- 2.Rc4#
- 2.Rd3#
- 1...Qe1
- 2.Rc4#
- 2.Rd3#
- 1...Qb2
- 2.Rc4#
- 2.Rd3#
- 1...Qd2
- 2.Rxd2#
- 2.Rc4#
- 1...Qb4
- 2.Rd3#
- 1...Qa5
- 2.Rc4#
- 2.Rd3#
- 1...Qd3
- 2.Rxd3#
- 1...Qxe3
- 2.Rb4#
- 1...Qc4
- 2.Rxc4#
- 1...Kxe3+
- Tries
- 1.Qd5+?
- 1...Kxe3+
- 2.Qe5#
- 1...cxd5!
- 1...Kxe3+
- 1.Qf5?
- 1...Kxe3+
- 2.Qe5#
- 1...Qxb3
- 2.Qe4#
- 2.Qf4#
- 1...Qxe3
- 2.Rb4#
- 1...Qxc5
- 2.Rd2#
- 2.Rd3#
- 2.Qf4#
- 1...Qa1
- 2.Rd2#
- 2.Rc4#
- 2.Rd3#
- 2.Qe4#
- 2.Qf4#
- 2.Qf6#
- 1...Qe1
- 2.Rc4#
- 2.Rd3#
- 2.Qe4#
- 2.Qf4#
- 2.Qf6#
- 1...Qb2
- 2.Rc4#
- 2.Rd3#
- 2.Qe4#
- 2.Qf4#
- 2.Qf6#
- 1...Qd2
- 2.Rxd2#
- 2.Rc4#
- 2.Qe4#
- 2.Qf4#
- 2.Qf6#
- 1...Qb4
- 2.Rd3#
- 2.Qe4#
- 2.Qf4#
- 2.Qf6#
- 1...Qa5
- 2.Rc4#
- 2.Rd3#
- 2.Qe4#
- 2.Qf4#
- 2.Qf6#
- 1...Qd3
- 2.Rxd3#
- 1...Qc4
- 2.Rxc4#
- 1...Qxc2!
- 1...Kxe3+
- 1.Qg5?
- 1...Qxb3
- 2.Qf4#
- 1...Qxe3
- 2.Rb4#
- 1...Qxc5
- 2.Qf4#
- 1...Qa1
- 2.Rd2#
- 2.Rc4#
- 2.Rd3#
- 2.Rb4#
- 2.Qf4#
- 2.Qf6#
- 2.Qg7#
- 1...Qe1
- 2.Rc4#
- 2.Rd3#
- 2.Qf4#
- 2.Qf6#
- 2.Qg7#
- 1...Qb2
- 2.Rc4#
- 2.Rd3#
- 2.Qf4#
- 2.Qf6#
- 2.Qg7#
- 1...Qd2
- 2.Rxd2#
- 2.Rc4#
- 2.Qf4#
- 2.Qf6#
- 2.Qg7#
- 1...Qb4
- 2.Rd3#
- 2.Rxb4#
- 2.Qf4#
- 2.Qf6#
- 2.Qg7#
- 1...Qa5
- 2.Rc4#
- 2.Rd3#
- 2.Qf4#
- 2.Qf6#
- 2.Qg7#
- 1...Qd3
- 2.Rxd3#
- 1...Qc4
- 2.Rxc4#
- 1...Qxc2!
- 1...Qxb3
- 1.Qd5+?
- Keys
- 1.Qh2!
- 1...Kxe3+
- 2.Qe5#
- 1...Kxc5+
- 2.Qe5#
- 1...Qxc2
- 2.Qd6#
- 1...Qxb3
- 2.Qf4#
- 1...Qxe3
- 2.Qd6#
- 1...Qxc5
- 2.Qf4#
- 1...Qa1
- 2.Rc4#
- 2.Rd3#
- 2.Qf4#
- 2.Qd6#
- 1...Qe1
- 2.Rc4#
- 2.Rd3#
- 2.Qf4#
- 2.Qd6#
- 1...Qb2
- 2.Rc4#
- 2.Rd3#
- 2.Qf4#
- 2.Qd6#
- 1...Qd2
- 2.Rc4#
- 2.Qf4#
- 2.Qd6#
- 1...Qb4
- 2.Rd3#
- 2.Qf4#
- 2.Qd6#
- 1...Qa5
- 2.Rc4#
- 2.Rd3#
- 2.Qf4#
- 2.Qd6#
- 1...Qd3
- 2.Rxd3#
- 1...Qc4
- 2.Rxc4#
- 1...Kxe3+
- 1.Qh2!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 4
- REMOVED MATES = 1
- Sets
- K(b);CHECK,P_SPINQ(a),S_FLIGHT,XS(D)::QAR2(F)
- Q(a);OGATE::R1(C)
- Q(a);OGATE::R1(C),XQ(a)
- Q(a);N_GUARD,SBLOCK,XS(D)::R(C)
- Q(a);OGATE::R1(A),XQ(a)
- Tries
- Try
- Q(F);CHECK
- Vars
- K(b);CHECK,P_SPINQ(a),S_FLIGHT,XS(D)::QAR2(F)
- Refutation
- P(c);XQ(F)
- Try
- Q(F);
- Vars
- K(b);CHECK,P_SPINQ(a),S_FLIGHT,XS(D)::QAR2(F)
- Q(a);N_GUARD,SBLOCK,XS(D)::R(C)
- Q(a);OGATE::R1(C),XQ(a)
- Q(a);OGATE::R1(A),XQ(a)
- Refutation
- Q(a);XR(A)
- Try
- Q(F);
- Vars
- Q(a);XR(C)::QAR2(F)
- Q(a);N_GUARD,XS(D)::R(C)
- Q(a);XS(E)::QAR2(F)
- Q(a);OGATE::R1(C),XQ(a)
- Q(a);OGATE::R1(A),XQ(a)
- Refutation
- Q(a);XR(A)
- Try
- Actual
- Q(F);
- Vars
- K(b);CHECK,P_SPINQ(a),S_FLIGHT,XS(D)::QAR2(F)
- K(b);CHECK,P_SPINQ(a),S_FLIGHT,XS(E)::QAR2(F)
- Q(a);XR(A)::QAR2(F)
- Q(a);XR(C)::QAR2(F)
- Q(a);XS(D)::QAR2(F)
- Q(a);XS(E)::QAR2(F)
- Q(a);OGATE::R1(C),XQ(a)
- Q(a);OGATE::R1(A),XQ(a)
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).