MESON Chess Problem Database
Problem Display
PID: 229122 (q2r4/1N1b1p2/1r2p3/1P2P3/kN6/p4Rp1/3pB1K1/1R6 w - - 0 1)
Ellerman, Arnoldo
L'Echiquier, 1926
#2
8 + 10
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qa5
- 2.Sc5#
- 1...Rxb5
- 2.Bd1#
- 1...Bxb5
- 2.Bd1#
- 1...Qa5
- Tries
- 1.Sc2?
- threat
- 2.Rb4#
- 2.Rxa3#
- 2.Rf4#
- 1...Rxb5
- 2.Rxa3#
- 1...Rxb7
- 2.Rxa3#
- 1...Bxb5
- 2.Rb4#
- 2.Rxa3#
- 1...d1Q
- 2.Rb4#
- 2.Rxa3#
- 1...d1R
- 2.Rb4#
- 2.Rxa3#
- 1...Qa5
- 2.Sc5#
- 2.Rxa3#
- 1...Qc8
- 2.Rb4#
- 2.Rxa3#
- 1...Rc6
- 2.Rb4#
- 2.Rxa3#
- 1...Rd6
- 2.Rb4#
- 2.Rxa3#
- 1...Rc8
- 2.Rb4#
- 2.Rxa3#
- 1...Bc6
- 2.Rb4#
- 1...Bc8
- 2.Rb4#
- 2.Rxa3#
- 1...Be8
- 2.Rb4#
- 2.Rxa3#
- 1...a2
- 2.Rb4#
- 2.Ra3#
- 2.Rf4#
- 1...Qxb7!
- threat
- 1.Sc6?
- threat
- 2.Sc5#
- 2.Bd1#
- 2.Rb4#
- 2.Rf4#
- 1...Qxb7
- 2.Bd1#
- 2.Rb4#
- 2.Rf4#
- 1...Rxb5
- 2.Bxb5#
- 1...Rxb7
- 2.Bd1#
- 2.Rb4#
- 2.Rf4#
- 1...Bxc6
- 2.Bd1#
- 1...d1Q
- 2.Sc5#
- 2.Bxd1#
- 2.Rb4#
- 1...d1S
- 2.Sc5#
- 2.Bxd1#
- 2.Rb4#
- 2.Rf4#
- 1...d1B
- 2.Sc5#
- 2.Bxd1#
- 2.Rb4#
- 2.Rf4#
- 1...d1R
- 2.Sc5#
- 2.Bxd1#
- 2.Rb4#
- 1...Qa5
- 2.Sc5#
- 2.Bd1#
- 1...Bc8
- 2.Sc5#
- 2.Bd1#
- 2.Rb4#
- 1...Be8
- 2.Sc5#
- 2.Bd1#
- 2.Rb4#
- 1...a2
- 2.Sc5#
- 2.Bd1#
- 2.Rb4#
- 1...Rxc6!
- threat
- 1.Sc2?
- Keys
- 1.Rf4!
- threat
- 2.Sa2#
- 2.Sc2#
- 2.Sd3#
- 2.Sd5#
- 2.Sa6#
- 2.Sc6#
- 1...Qxb7+
- 2.Sc6#
- 1...Bc6+
- 2.Sd5#
- 1...Rxb5
- 2.Bd1#
- 1...Rxb7
- 2.Sc6#
- 1...Bxb5
- 2.Bd1#
- 1...a2
- 2.Sc2#
- 1...d1Q
- 2.Sd3#
- 1...d1R
- 2.Sd3#
- 1...Qa5
- 2.Sc5#
- 1...Qa6
- 2.Sa2#
- 2.Sc2#
- 2.Sd3#
- 2.Sd5#
- 2.Sxa6#
- 2.Sc6#
- 1...Qc8
- 2.Sc6#
- 1...Ra6
- 2.Sa2#
- 2.Sc2#
- 2.Sd3#
- 2.Sd5#
- 2.Sxa6#
- 2.Sc6#
- 1...Rc6
- 2.Sxc6#
- 1...Rd6
- 2.Sd5#
- 1...Rc8
- 2.Sc6#
- 1...Bc8
- 2.Sd5#
- 1...Be8
- 2.Sd5#
- threat
- 1.Rf4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 12
- REMOVED MATES = 0
- Sets
- Q(i);SBLOCK::S(H)
- R(e);SBLOCK,XP(F)::B(B)
- B(g);SBLOCK,XP(F)::B(B)
- Tries
- Try
- S(E);
- Threat
- DUALS(3)
- Vars
- R(e);XP(F)::R1(D),XP(b)
- R(e);XS(H)::R1(D),XP(b)
- B(g);P_PINR(D)::R1(A)
- Refutation
- Q(i);P_PINR(D),XS(H)
- Try
- S(E);
- Threat
- DUALS(4)
- Vars
- R(e);OGATE,XP(F)::B(B),XR(e)
- B(g);P_PINR(D),XS(E)::B(B)
- Refutation
- R(e);XS(E)
- Try
- Actual
- R(D);P_SPINS(H)
- Threat
- DUALS(6)
- Vars
- Q(i);CHECK,XS(H)::R(D)+S(E)
- B(g);CHECK,N_PINS(H)::R(D)+S(E)
- R(e);SBLOCK,XP(F)::B(B)
- R(e);XS(H)::R(D)+S(E)
- B(g);SBLOCK,XP(F)::B(B)
- P(b);::R(D)+S(E)
- P(a);::R(D)+S(E)
- Q(i);N_PINS(H),SBLOCK::S(H)
- Q(i);N_PINS(H)::R(D)+S(E)
- R(e);N_PINS(H)::R(D)+S(E),XR(e)
- R(e);::R(D)+S(E)
- R(j);::R(D)+S(E)
- B(g);::R(D)+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).