MESON Chess Problem Database
Problem Display
PID: 195771 (8/p2NpN1B/Pb1rP3/1Q1p4/rp1k4/8/1P3K2/4n3 w - - 0 1)
Sero, ?
Western Daily Mercury, 1917
(First published on Fri Nov 30 1917)
#2
8 + 9
| 15239 | Valois Notebooks | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Qxb4#
- 1...Ra2
- 2.Qxb4#
- 1...Ra3
- 2.Qxb4#
- 1...Ra5
- 2.Qxb4#
- 1...Rxa6
- 2.Qxb4#
- 1...Ba5
- 2.Qc5#
- 1...Bc5
- 2.Qxc5#
- 1...Bc7
- 2.Qc5#
- 1...Bd8
- 2.Qc5#
- 1...Sc2
- 2.Qd3#
- 1...Sg2
- 2.Qd3#
- 1...Sd3+
- 2.Qxd3#
- 1...Sf3
- 2.Qd3#
- 1...b3
- 2.Qxa4#
- 1...Ra1
- Tries
- 1.Sfe5?
- 1...Sd3+
- 2.Qxd3#
- 1...Rxa6
- 2.Qxb4#
- 1...Rxd7
- 2.Sc6#
- 1...Ra1
- 2.Qxb4#
- 1...Ra2
- 2.Qxb4#
- 1...Ra3
- 2.Qxb4#
- 1...Ra5
- 2.Qxb4#
- 1...Rc6
- 2.Sxc6#
- 1...Ba5
- 2.Qc5#
- 1...Bc5
- 2.Qxc5#
- 1...Bc7
- 2.Qc5#
- 1...Bd8
- 2.Qc5#
- 1...Sc2
- 2.Sf3#
- 2.Qd3#
- 1...Sg2
- 2.Sf3#
- 2.Qd3#
- 1...Sf3
- 2.Sxf3#
- 2.Qd3#
- 1...b3
- 2.Qxa4#
- 1...Rxe6!
- 1...Sd3+
- 1.Sxd6?
- 1...Sd3+
- 2.Qxd3#
- 1...Rxa6
- 2.Qxb4#
- 1...Ra1
- 2.Qxb4#
- 1...Ra2
- 2.Qxb4#
- 1...Ra3
- 2.Qxb4#
- 1...Ra5
- 2.Qxb4#
- 1...Ba5
- 2.Qc5#
- 1...Bc5
- 2.Qxc5#
- 1...Bc7
- 2.Qc5#
- 1...Bd8
- 2.Qc5#
- 1...Sc2
- 2.Qd3#
- 1...Sg2
- 2.Qd3#
- 1...Sf3
- 2.Qd3#
- 1...b3
- 2.Qxa4#
- 1...exd6!
- 1...Sd3+
- 1.Sfe5?
- Keys
- 1.Sd8!
- 1...Sd3+
- 2.Qxd3#
- 1...Rxa6
- 2.Qxb4#
- 1...Rxe6
- 2.Sxe6#
- 1...Rxd7
- 2.Sc6#
- 1...Bxd8
- 2.Qc5#
- 1...Rc6
- 2.Sxc6#
- 1...Ra1
- 2.Qxb4#
- 1...Ra2
- 2.Qxb4#
- 1...Ra3
- 2.Qxb4#
- 1...Ra5
- 2.Qxb4#
- 1...Ba5
- 2.Qc5#
- 1...Bc5
- 2.Qxc5#
- 1...Bc7
- 2.Qc5#
- 1...Sc2
- 2.Qd3#
- 1...Sg2
- 2.Qd3#
- 1...Sf3
- 2.Qd3#
- 1...b3
- 2.Qxa4#
- 1...Sd3+
- 1.Sd8!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- R(b);N_GUARD::QAR2(C),XP(c)
- R(b);N_GUARD,P_PINP(A)::QAR2(C),XP(c)
- R(b);N_GUARD,XP(D)::QAR2(C),XP(c)
- B(f);N_GUARD::QAB1(C)
- B(f);N_GUARD::QAB1(C),XB(f)
- S(a);N_GUARD::QAR1(C)
- S(a);CHECK,N_GUARD::QAR1(C),XS(a)
- P(c);OGATEB::QAR(C),XR(b)
- Tries
- Try
- S(G);
- Vars
- S(a);CHECK,N_GUARD::QAR1(C),XS(a)
- R(b);N_GUARD,XP(D)::QAR2(C),XP(c)
- R(g);N_GUARD,XS(F)::S(G)
- R(b);N_GUARD::QAR2(C),XP(c)
- R(b);N_GUARD,P_PINP(A)::QAR2(C),XP(c)
- R(g);N_GUARD::S(G),XR(g)
- B(f);N_GUARD::QAB1(C)
- B(f);N_GUARD::QAB1(C),XB(f)
- P(c);OGATEB::QAR(C),XR(b)
- Refutation
- R(g);XP(E)
- Try
- S(G);XR(g)
- Vars
- S(a);CHECK,N_GUARD::QAR1(C),XS(a)
- R(b);N_GUARD,XP(D)::QAR2(C),XP(c)
- R(b);N_GUARD::QAR2(C),XP(c)
- R(b);N_GUARD,P_PINP(A)::QAR2(C),XP(c)
- B(f);N_GUARD::QAB1(C)
- B(f);N_GUARD::QAB1(C),XB(f)
- S(a);N_GUARD::QAR1(C)
- P(c);OGATEB::QAR(C),XR(b)
- Refutation
- P(i);XS(G)
- Try
- Actual
- S(G);
- Vars
- S(a);CHECK,N_GUARD::QAR1(C),XS(a)
- R(b);N_GUARD,XP(D)::QAR2(C),XP(c)
- R(g);XP(E)::S(G),XR(g)
- R(g);N_GUARD,XS(F)::S(G)
- B(f);N_GUARD,XS(G)::QAB1(C)
- R(g);N_GUARD::S(G),XR(g)
- R(b);N_GUARD::QAR2(C),XP(c)
- R(b);N_GUARD,P_PINP(A)::QAR2(C),XP(c)
- B(f);N_GUARD::QAB1(C)
- B(f);N_GUARD::QAB1(C),XB(f)
- S(a);N_GUARD::QAR1(C)
- P(c);OGATEB::QAR(C),XR(b)
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).