MESON Chess Problem Database
Problem Display
PID: 204666 (1n3B1q/2n4p/8/1R2N3/1p1kB1p1/8/N7/4Q1bK w - - 0 1)
Bar, Wolfgang
Freie Presse, 1974
#2
7 + 8
| 15148 | Sadier Collection | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qxe5
- 2.Rxb4#
- 1...Be3
- 2.Qxb4#
- 1...Sd5
- 2.Rxd5#
- 1...Sca6
- 2.Rd5#
- 1...Se6
- 2.Rd5#
- 1...Sa8
- 2.Rd5#
- 1...Se8
- 2.Rd5#
- 1...Qxe5
- Tries
- 1.Sf3+?
- 1...Kc4
- 2.Rxb4#
- 2.Qxb4#
- 1...gxf3!
- 1...Kc4
- 1.Sc6+?
- 1...Kc4
- 2.Rxb4#
- 2.Qxb4#
- 1...Sxc6!
- 1...Kc4
- 1.Bb1?
- threat
- 2.Qd2#
- 2.Qxg1#
- 2.Qe4#
- 1...Qxf8
- 2.Qd2#
- 2.Qe4#
- 1...Sxb5
- 2.Qe4#
- 1...Qf6
- 2.Qd2#
- 2.Qe4#
- 1...Bf2
- 2.Qd2#
- 2.Qxf2#
- 2.Qe4#
- 1...Bh2
- 2.Qd2#
- 2.Qf2#
- 2.Qe4#
- 1...Be3
- 2.Qxb4#
- 1...Sd5
- 2.Bc5#
- 2.Qe4#
- 1...Qxe5!
- threat
- 1.Bc2?
- threat
- 2.Qd2#
- 2.Qxg1#
- 2.Qe4#
- 1...Qxf8
- 2.Qd2#
- 2.Qe4#
- 1...Sxb5
- 2.Qe4#
- 1...Qf6
- 2.Qd2#
- 2.Qe4#
- 1...Bf2
- 2.Qd2#
- 2.Qxf2#
- 2.Qe4#
- 1...Bh2
- 2.Qd2#
- 2.Qf2#
- 2.Qe4#
- 1...Be3
- 2.Qxb4#
- 2.Qa1#
- 1...Sd5
- 2.Bc5#
- 2.Qe4#
- 1...Qxe5!
- threat
- 1.Bg2?
- threat
- 2.Bc5#
- 2.Rxb4#
- 2.Qd2#
- 2.Qxg1#
- 2.Qe4#
- 1...Qxf8
- 2.Qd2#
- 2.Qe4#
- 1...Sxb5
- 2.Qe4#
- 1...Qg8
- 2.Bc5#
- 2.Qd2#
- 2.Qxg1#
- 2.Qe4#
- 1...Qf6
- 2.Bc5#
- 2.Rxb4#
- 2.Qd2#
- 2.Qe4#
- 1...Bf2
- 2.Bc5#
- 2.Rxb4#
- 2.Qd2#
- 2.Qxf2#
- 2.Qe4#
- 1...Bh2
- 2.Bc5#
- 2.Rxb4#
- 2.Qd2#
- 2.Qf2#
- 2.Qe4#
- 1...Be3
- 2.Qxb4#
- 2.Qa1#
- 1...Sd5
- 2.Bc5#
- 2.Rxd5#
- 2.Qe4#
- 1...Sca6
- 2.Rd5#
- 2.Qd2#
- 2.Qxg1#
- 2.Qe4#
- 1...Se6
- 2.Rxb4#
- 2.Rd5#
- 2.Qd2#
- 2.Qxg1#
- 2.Qe4#
- 1...Sba6
- 2.Qd2#
- 2.Qxg1#
- 2.Qe4#
- 1...Sc6
- 2.Bc5#
- 2.Qd2#
- 2.Qxg1#
- 2.Qe4#
- 1...Sd7
- 2.Rxb4#
- 2.Qd2#
- 2.Qxg1#
- 2.Qe4#
- 1...b3
- 2.Bc5#
- 2.Rb4#
- 2.Qd2#
- 2.Qc3#
- 2.Qxg1#
- 2.Qe4#
- 1...Qxe5!
- threat
- 1.Bd3?
- threat
- 2.Qxg1#
- 2.Qe4#
- 1...Qxf8
- 2.Qe4#
- 1...Sxb5
- 2.Qe4#
- 1...Qf6
- 2.Qe4#
- 1...Bf2
- 2.Qxf2#
- 2.Qe4#
- 1...Bh2
- 2.Qf2#
- 2.Qe4#
- 1...Be3
- 2.Qxb4#
- 2.Qa1#
- 1...Sd5
- 2.Bc5#
- 2.Qe4#
- 1...Qxe5!
- threat
- 1.Bf5?
- threat
- 2.Qd2#
- 2.Qxg1#
- 2.Qe4#
- 1...Sxb5
- 2.Qe4#
- 1...Bf2
- 2.Qd2#
- 2.Qxf2#
- 2.Qe4#
- 1...Bh2
- 2.Qd2#
- 2.Qf2#
- 2.Qe4#
- 1...Be3
- 2.Qxb4#
- 2.Qa1#
- 1...Sd5
- 2.Bc5#
- 2.Qe4#
- 1...Qxe5!
- threat
- 1.Qe2?
- threat
- 2.Qd3#
- 1...Sd5
- 2.Rxd5#
- 1...Sxb5!
- threat
- 1.Sf3+?
- Keys
- 1.Bd5!
- threat
- 2.Qe4#
- 1...Qxe5
- 2.Qd2#
- 1...Sxd5
- 2.Bc5#
- 1...Be3
- 2.Qa1#
- threat
- 1.Bd5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 0
- REMOVED MATES = 4
- Sets
- Q(h);SBLOCK,XS(F)::R(E),XP(b)
- B(a);SBLOCK::QAR2(A),XP(b)
- S(e);N_GUARD::R1(E),XS(e)
- S(e);N_GUARD::R1(E)
- Tries
- Try
- S(F);CHECK
- Refutation
- P(d);XS(F)
- Try
- S(F);CHECK
- Refutation
- S(g);XS(F)
- Try
- B(D);
- Threat
- DUALS(3)
- Vars
- S(e);XR(E)::QAR1(A)
- B(a);SBLOCK::QAR2(A),XP(b)
- Refutation
- Q(h);XS(F)
- Try
- B(D);
- Threat
- DUALS(3)
- Vars
- S(e);XR(E)::QAR1(A)
- Refutation
- Q(h);XS(F)
- Try
- B(D);
- Threat
- DUALS(5)
- Vars
- S(e);XR(E)::QAR1(A)
- Refutation
- Q(h);XS(F)
- Try
- B(D);
- Threat
- DUALS(2)
- Vars
- Q(h);XB(G)::QAR1(A)
- S(e);XR(E)::QAR1(A)
- Q(h);::QAR1(A)
- Refutation
- Q(h);XS(F)
- Try
- B(D);
- Threat
- DUALS(3)
- Vars
- S(e);XR(E)::QAR1(A)
- Refutation
- Q(h);XS(F)
- Try
- Q(A);
- Threat
- QAR1(A)
- Vars
- S(e);N_GUARD::R1(E),XS(e)
- Refutation
- S(e);XR(E)
- Try
- Actual
- B(D);
- Threat
- QAR1(A)
- Vars
- Q(h);SBLOCK,XS(F)::QAR2(A)
- S(e);SBLOCK,XB(D)::B(G)
- B(a);SBLOCK::QAB(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).