MESON Chess Problem Database
Problem Display
PID: 218580 (3r4/3p4/1N1R4/1p2kn2/5b2/B2B3b/7N/K2Q2n1 w - - 0 1)
Arnold, William E
Cincinnati Commercial, 1882
#2
7 + 8
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Ra8
- 2.Sxd7#
- 1...Rb8
- 2.Sxd7#
- 1...Rc8
- 2.Sxd7#
- 1...Re8
- 2.Sxd7#
- 1...Rf8
- 2.Sxd7#
- 1...Rg8
- 2.Sxd7#
- 1...Rh8
- 2.Sxd7#
- 1...Bf1
- 2.Sg4#
- 1...Bg2
- 2.Sg4#
- 1...Bg4
- 2.Sxg4#
- 1...Se2
- 2.Sf3#
- 1...Sf3
- 2.Sxf3#
- 1...b4
- 2.Sc4#
- 1...Ra8
- Tries
- 1.Qe2+?
- 1...Sxe2
- 2.Sf3#
- 1...Se3
- 2.Qb2#
- 1...Be3!
- 1...Sxe2
- 1.Qf3?
- threat
- 2.Qe4#
- 2.Qd5#
- 1...Bxh2
- 2.Qe4#
- 1...Sxf3
- 2.Sxf3#
- 1...b4
- 2.Sc4#
- 2.Qd5#
- 1...Bg2
- 2.Sg4#
- 1...Bc1
- 2.Qe4#
- 1...Bd2
- 2.Qe4#
- 1...Be3
- 2.Qe4#
- 1...Bg3
- 2.Qe4#
- 1...Bg5
- 2.Qe4#
- 1...Bh6
- 2.Qe4#
- 1...Se3
- 2.Qe4#
- 1...Sg3
- 2.Qd5#
- 1...Se7
- 2.Qe4#
- 1...Sxd6!
- threat
- 1.Qa4?
- threat
- 2.Qxb5#
- 2.Qe4#
- 1...Bxh2
- 2.Qe4#
- 1...bxa4
- 2.Sc4#
- 1...b4
- 2.Sc4#
- 1...Rc8
- 2.Sxd7#
- 2.Qe4#
- 1...Bg2
- 2.Sg4#
- 1...Bc1
- 2.Qe4#
- 1...Bd2
- 2.Qe4#
- 1...Be3
- 2.Qe4#
- 1...Bg3
- 2.Qe4#
- 1...Bg5
- 2.Qe4#
- 1...Bh6
- 2.Qe4#
- 1...Se3
- 2.Qd4#
- 2.Qe4#
- 1...Sg3
- 2.Qxb5#
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Se7
- 2.Qd4#
- 2.Qe4#
- 1...Sxd6!
- threat
- 1.Qe1+?
- 1...Se2
- 2.Sf3#
- 1...Se3
- 2.Qc3#
- 1...Be3!
- 1...Se2
- 1.Qe2+?
- Keys
- 1.Qg4!
- 1...Bxg4
- 2.Sxg4#
- 1...Bxh2
- 2.Qe4#
- 1...Sxd6
- 2.Bb2#
- 1...b4
- 2.Sc4#
- 1...Ra8
- 2.Sxd7#
- 1...Rb8
- 2.Sxd7#
- 1...Rc8
- 2.Sxd7#
- 1...Re8
- 2.Sxd7#
- 1...Rf8
- 2.Sxd7#
- 1...Rg8
- 2.Sxd7#
- 1...Rh8
- 2.Sxd7#
- 1...Bf1
- 2.Qxf5#
- 1...Bg2
- 2.Qxf5#
- 1...Bc1
- 2.Qe4#
- 1...Bd2
- 2.Qe4#
- 1...Be3
- 2.Qe4#
- 1...Bg3
- 2.Qe4#
- 1...Bg5
- 2.Qe4#
- 1...Bh6
- 2.Qe4#
- 1...Se2
- 2.Sf3#
- 1...Sf3
- 2.Sxf3#
- 1...Se3
- 2.Qg7#
- 1...Sg3
- 2.Qg7#
- 1...Sd4
- 2.Qg7#
- 1...Sh4
- 2.Qg7#
- 1...Sh6
- 2.Qg7#
- 1...Se7
- 2.Qg7#
- 1...Sg7
- 2.Qxg7#
- 1...Bxg4
- 1.Qg4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 2
- ADDED MATES = 15
- REMOVED MATES = 0
- Sets
- R(h);N_GUARD,P_PINB(D)::S(F),XP(g)
- R(h);N_GUARD::S(F),XP(g)
- B(b);N_GUARD::S(C)
- B(b);N_GUARD::S(C),XB(b)
- S(a);N_GUARD::S(C)
- S(a);N_GUARD::S(C),XS(a)
- P(d);N_GUARD::S(F)
- Tries
- Try
- Q(B);CHECK
- Vars
- S(a);XQ(B)::S(C)
- S(f);N_GUARD,P_SPINS(f)::QAB(B)
- Refutation
- B(c);P_SPINB(c)
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- B(c);XS(C)::QAR1(B)
- S(a);XQ(B)::S(C),XS(a)
- B(b);N_GUARD::S(C)
- B(c);::QAR1(B)
- S(f);::QAR1(B)
- Refutation
- S(f);XR(G)
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- B(c);XS(C)::QAR1(B)
- P(d);N_GUARD,XQ(B)::S(F)
- P(d);N_GUARD::S(F)
- B(b);N_GUARD::S(C)
- B(c);::QAR1(B)
- S(f);N_GUARD::QAB1(B),XS(f)
- Refutation
- S(f);XR(G)
- Try
- Q(B);CHECK
- Vars
- S(a);P_SPINS(a)::S(C)
- S(f);N_GUARD,P_SPINS(f)::QAB(B)
- Refutation
- B(c);P_SPINB(c)
- Try
- Actual
- Q(B);
- Vars
- B(b);XQ(B)::S(C),XB(b)
- B(c);OGATE,XS(C)::QAR1(B)
- S(f);N_GUARD,SBLOCK,XR(G)::B(D)
- P(d);N_GUARD::S(F)
- R(h);N_GUARD,P_PINB(D)::S(F),XP(g)
- R(h);N_GUARD::S(F),XP(g)
- B(b);N_GUARD::QAR1(B),XS(f)
- B(c);OGATE::QAR1(B)
- S(a);N_GUARD::S(C)
- S(a);N_GUARD::S(C),XS(a)
- S(f);N_GUARD::QAB(B)
- S(f);N_GUARD::QAB(B),XS(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).