MESON Chess Problem Database
Problem Display
PID: 194863 (1Q6/rn3p2/p1N1nK2/P3B3/R7/1kp5/R7/8 w - - 0 1)
Opdenoordt, Joseph J
De Maasbode, 1918
#2
7 + 7
| 6490 | yacpdb | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Ra8
- 2.Qxb7#
- 1...Sd4
- 2.Sxd4#
- 1...Sf4
- 2.Sd4#
- 1...Sc5
- 2.Sd4#
- 1...Sg5
- 2.Sd4#
- 1...Sc7
- 2.Sd4#
- 1...Sg7
- 2.Sd4#
- 1...Sd8
- 2.Sd4#
- 1...Sf8
- 2.Sd4#
- 1...c2
- 2.R2a3#
- 1...Ra8
- Tries
- 1.Bg3?
- 1...Sd4
- 2.Sxd4#
- 1...Ra8
- 2.Qxb7#
- 1...Sf4
- 2.Sd4#
- 1...Sc5
- 2.Sd4#
- 1...Sg5
- 2.Sd4#
- 1...Sc7
- 2.Sd4#
- 1...Sg7
- 2.Sd4#
- 1...Sd8
- 2.Sd4#
- 1...Sf8
- 2.Sd4#
- 1...c2!
- 1...Sd4
- 1.Bf4?
- 1...Sxf4
- 2.Sd4#
- 1...Sd4
- 2.Sxd4#
- 1...Ra8
- 2.Qxb7#
- 1...Sc5
- 2.Sd4#
- 1...Sg5
- 2.Sd4#
- 1...Sc7
- 2.Sd4#
- 1...Sg7
- 2.Sd4#
- 1...Sd8
- 2.Sd4#
- 1...Sf8
- 2.Sd4#
- 1...c2!
- 1...Sxf4
- 1.Bd6?
- 1...Sd4
- 2.Sxd4#
- 1...Ra8
- 2.Qxb7#
- 1...Sf4
- 2.Sd4#
- 1...Sc5
- 2.Sd4#
- 1...Sg5
- 2.Sd4#
- 1...Sc7
- 2.Sd4#
- 1...Sg7
- 2.Sd4#
- 1...Sd8
- 2.Sd4#
- 1...Sf8
- 2.Sd4#
- 1...c2!
- 1...Sd4
- 1.Bc7?
- 1...Sxc7
- 2.Sd4#
- 1...Sd4
- 2.Sxd4#
- 1...Ra8
- 2.Qxb7#
- 1...Sf4
- 2.Sd4#
- 1...Sc5
- 2.Sd4#
- 1...Sg5
- 2.Sd4#
- 1...Sg7
- 2.Sd4#
- 1...Sd8
- 2.Sd4#
- 1...Sf8
- 2.Sd4#
- 1...c2!
- 1...Sxc7
- 1.Qd6?
- threat
- 2.Qa3#
- 2.Qb4#
- 2.Qd5#
- 1...Sxa5
- 2.Sxa5#
- 2.Qa3#
- 2.Qb4#
- 1...Sf4
- 2.Sd4#
- 2.Qa3#
- 2.Qb4#
- 1...Sec5
- 2.Sd4#
- 2.Qd5#
- 1...Sc7
- 2.Sd4#
- 2.Qa3#
- 2.Qb4#
- 1...Sbc5
- 2.Qd5#
- 1...Sxd6!
- threat
- 1.Qxa7?
- threat
- 2.Qb6#
- 2.Qxb7#
- 1...Sxa5
- 2.Sxa5#
- 2.Qb6#
- 1...Sd4
- 2.Sxd4#
- 1...Sec5
- 2.Sd4#
- 2.Qb6#
- 1...Sc7
- 2.Sd4#
- 1...Sed8
- 2.Sd4#
- 2.Qb6#
- 1...Sbc5
- 2.Qb6#
- 1...Sbd8
- 2.Qb6#
- 1...Sd6!
- threat
- 1.Qc7?
- threat
- 2.Qb6#
- 1...Sxc7
- 2.Sd4#
- 1...Sd4
- 2.Sxd4#
- 1...Sd6!
- threat
- 1.Bg3?
- Keys
- 1.Bh2!
- 1...c2
- 2.Qg3#
- 1...Sd4
- 2.Sxd4#
- 1...Ra8
- 2.Qxb7#
- 1...Sf4
- 2.Sd4#
- 1...Sc5
- 2.Sd4#
- 1...Sg5
- 2.Sd4#
- 1...Sc7
- 2.Sd4#
- 1...Sg7
- 2.Sd4#
- 1...Sd8
- 2.Sd4#
- 1...Sf8
- 2.Sd4#
- 1...c2
- 1.Bh2!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(e);N_GUARD::QAR(G),XS(f)
- S(d);N_GUARD::S(E),XS(d)
- S(d);N_GUARD::S(E)
- P(b);SBLOCK::R1(A)
- Tries
- Try
- B(D);
- Vars
- S(d);N_GUARD::S(E),XS(d)
- R(e);N_GUARD::QAR(G),XS(f)
- S(d);N_GUARD::S(E)
- Refutation
- P(b);
- Try
- B(D);
- Vars
- S(d);N_GUARD,XB(D)::S(E)
- S(d);N_GUARD::S(E),XS(d)
- R(e);N_GUARD::QAR(G),XS(f)
- S(d);N_GUARD::S(E)
- Refutation
- P(b);
- Try
- B(D);
- Vars
- S(d);N_GUARD::S(E),XS(d)
- R(e);N_GUARD::QAR(G),XS(f)
- S(d);N_GUARD::S(E)
- Refutation
- P(b);
- Try
- B(D);
- Vars
- S(d);N_GUARD,XB(D)::S(E)
- S(d);N_GUARD::S(E),XS(d)
- R(e);N_GUARD::QAR(G),XS(f)
- S(d);N_GUARD::S(E)
- Refutation
- P(b);
- Try
- Q(G);N_PINS(f)
- Threat
- DUALS(3)
- Vars
- S(f);::QAB(G)
- Refutation
- S(f);XQ(G)
- Try
- Q(G);N_PINS(f),XR(e)
- Threat
- DUALS(2)
- Vars
- S(d);N_GUARD::S(E),XS(d)
- S(d);N_GUARD::S(E)
- S(f);::QAR(G)
- Refutation
- S(f);
- Try
- Q(G);N_PINS(f)
- Threat
- QAR(G)
- Vars
- S(d);N_GUARD,XQ(G)::S(E)
- S(d);N_GUARD::S(E),XS(d)
- Refutation
- S(f);
- Try
- Actual
- B(D);
- Vars
- P(b);OGATEB::QAR(G)
- S(d);N_GUARD::S(E),XS(d)
- R(e);N_GUARD::QAR(G),XS(f)
- S(d);N_GUARD::S(E)
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).