MESON Chess Problem Database
Problem Display
PID: 202920 (N7/R5p1/2k4b/1N4n1/PP2p2r/K1B3qb/3Qpp2/2R3nr w - - 0 1)
Ellerman, Arnoldo
Western Daily Mercury, 1920
(First published on Fri Mar 12 1920)
#2
9 + 12
| 15239 | Valois Notebooks | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qh2
- 2.Ba1#
- 2.Bb2#
- 2.Be5#
- 2.Bf6#
- 2.Bxg7#
- 1...Qf4
- 2.Ba1#
- 2.Bb2#
- 2.Be5#
- 2.Bf6#
- 2.Bxg7#
- 1...Qe5
- 2.Bxe5#
- 1...Qd6
- 2.Qxd6#
- 1...Qc7
- 2.Ba1#
- 2.Bb2#
- 2.Be5#
- 2.Bf6#
- 2.Bxg7#
- 2.Rxc7#
- 1...Qb8
- 2.Ba1#
- 2.Bb2#
- 2.Be5#
- 2.Bf6#
- 2.Bxg7#
- 1...Qg2
- 2.Ba1#
- 2.Bb2#
- 2.Be5#
- 2.Bf6#
- 2.Bxg7#
- 2.Rc7#
- 2.Qd6#
- 1...Qxc3+
- 2.Rxc3#
- 1...Qe3
- 2.Rc7#
- 2.Qd6#
- 1...Qf3
- 2.Rc7#
- 2.Qd6#
- 1...Qg4
- 2.Ba1#
- 2.Bb2#
- 2.Be5#
- 2.Bf6#
- 2.Bxg7#
- 2.Rc7#
- 2.Qd6#
- 1...Rf4
- 2.Rc7#
- 2.Qd6#
- 1...Rg4
- 2.Qd7#
- 1...Bf1
- 2.Qd7#
- 1...Bg2
- 2.Qd7#
- 1...Bd7
- 2.Qxd7#
- 1...Sf3
- 2.Ba1#
- 2.Bb2#
- 2.Be5#
- 2.Bf6#
- 2.Bxg7#
- 1...Se6
- 2.Qd7#
- 1...Qh2
- Tries
- 1.Re7?
- threat
- 2.Sa7#
- 1...Qxc3+
- 2.Rxc3#
- 1...Qc7
- 2.Rxc7#
- 1...Bd7
- 2.Qxd7#
- 1...Qb8
- 2.Ba1#
- 2.Bb2#
- 2.Be5#
- 2.Bf6#
- 2.Bxg7#
- 1...Qe3
- 2.Rc7#
- 2.Qd6#
- 1...Qd3!
- threat
- 1.Qd4?
- threat
- 2.Qc5#
- 2.Qc4#
- 1...Qxc3+
- 2.Rxc3#
- 1...Qd6
- 2.Qxd6#
- 1...Qc7
- 2.Ba1#
- 2.Be1#
- 2.Bb2#
- 2.Bd2#
- 2.Rxc7#
- 1...Qd3
- 2.Rc7#
- 2.Qc5#
- 1...Qe3
- 2.Rc7#
- 2.Qd6#
- 1...Be6
- 2.Qc5#
- 1...Se6
- 2.Qd7#
- 1...e3
- 2.Ba1#
- 2.Be1#
- 2.Bb2#
- 2.Bd2#
- 2.Qc5#
- 1...Qe5!
- threat
- 1.Re7?
- Keys
- 1.Qd8!
- threat
- 2.Sd4#
- 1...Qxc3+
- 2.Rxc3#
- 1...Qd6
- 2.Qxd6#
- 1...Bd7
- 2.Qxd7#
- 1...Qe5
- 2.Bxe5#
- 1...Qd3
- 2.Rc7#
- 1...Qe3
- 2.Rc7#
- 2.Qd6#
- 1...S1f3
- 2.Be1#
- 1...S5f3
- 2.Bd2#
- 1...Se6
- 2.Qd7#
- 1...e3
- 2.Bd4#
- threat
- 1.Qd8!
This is a version
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 3
- Sets
- Q(e);N_PINB(D)::R(A)+B(D),XQ(e)
- Q(e);N_GUARD,N_PINB(D),P_PINP(F)::QAR1(B),XQ(e)
- Q(e);CHECK,OGATE,P_SPINQ(e),XB(D)::R(A),XQ(e)
- R(h);S_CUTB(f)::QAB1(B)
- B(f);N_GUARD::QAB1(B)
- B(f);N_GUARD::QAB1(B),XB(f)
- S(i);S_CUTB(f)::QAB1(B)
- Tries
- Try
- R(H);
- Threat
- S(G)
- Vars
- Q(e);CHECK,OGATE,P_SPINQ(e),XB(D)::R(A),XQ(e)
- Q(e);N_GUARD,N_PINB(D)::R1(H),XQ(e)
- B(f);N_GUARD::QAB1(B),XB(f)
- Refutation
- Q(e);
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- Q(e);CHECK,OGATE,P_SPINQ(e),XB(D)::R(A),XQ(e)
- Q(e);N_GUARD,N_PINB(D),P_PINP(F)::QAR1(B),XQ(e)
- B(f);::QAR1(B)
- S(i);S_CUTB(f)::QAB1(B)
- Refutation
- Q(e);N_PINB(D)
- Try
- Actual
- Q(B);
- Threat
- S(G)
- Vars
- Q(e);CHECK,OGATE,P_SPINQ(e),XB(D)::R(A),XQ(e)
- Q(e);N_GUARD,N_PINB(D),P_PINP(F)::QAR1(B),XQ(e)
- B(f);N_GUARD::QAB1(B),XB(f)
- Q(e);N_PINB(D)::R(A)+B(D),XQ(e)
- Q(e);N_GUARD::R1(H)
- S(a);N_PINB(D)::R(A)+B(D)
- S(i);N_PINB(D)::R(A)+B(D)
- S(i);S_CUTB(f)::QAB1(B)
- P(g);N_PINB(D)::R(A)+B(D)
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).