MESON Chess Problem Database
Problem Display
PID: 83595 (n1N5/3p4/3Q4/r7/pNkP2qR/7p/P2BR2p/3K1B2 w - - 0 1)
Ellerman, Arnoldo
L'Echiquier, 1925
#2
10 + 8
| 6490 | yacpdb | 2009 |
| 14868 | Pirnie Collection | 2013 |
SOLUTION
- SOUND
- Sets
- 1...Kb5
- 2.Qc5#
- 2.Qd5#
- 1...Qxe2+
- 2.Bxe2#
- 1...Qe6
- 2.Re3#
- 2.Ree4#
- 2.Re5#
- 2.Rxe6#
- 1...Qg2
- 2.Rxg2#
- 1...Qg3
- 2.Re3#
- 1...Qxd4
- 2.Re1#
- 2.Rf2#
- 2.Rg2#
- 2.Rxh2#
- 2.Re3#
- 2.Ree4#
- 2.Re5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Qe4
- 2.Rexe4#
- 1...Qf4
- 2.Rf2#
- 1...Qxh4
- 2.Re1#
- 2.Rf2#
- 2.Rg2#
- 2.Rxh2#
- 2.Re3#
- 2.Re4#
- 2.Re5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Qg5
- 2.Re1#
- 2.Rf2#
- 2.Rg2#
- 2.Rxh2#
- 2.Re3#
- 2.Ree4#
- 2.Re5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Qg6
- 2.Ree4#
- 1...Qg7
- 2.Re1#
- 2.Rf2#
- 2.Rg2#
- 2.Rxh2#
- 2.Re3#
- 2.Ree4#
- 2.Re5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Qg8
- 2.Re1#
- 2.Rf2#
- 2.Rg2#
- 2.Rxh2#
- 2.Re3#
- 2.Ree4#
- 2.Re5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Rc5
- 2.Qxc5#
- 1...Rd5
- 2.Qxd5#
- 1...Ra6
- 2.Qc5#
- 2.Qd5#
- 1...Ra7
- 2.Qc5#
- 2.Qd5#
- 1...Kb5
- Tries
- 1.Sb6+?
- 1...Kb5
- 2.Qc5#
- 1...Sxb6!
- 1...Kb5
- 1.Qe5?
- threat
- 2.Sd6#
- 1...Qxe2+
- 2.Bxe2#
- 2.Qxe2#
- 1...Rd5
- 2.Qxd5#
- 1...Qe6
- 2.Re1#
- 2.Rf2#
- 2.Rg2#
- 2.Rxh2#
- 2.Re3#
- 2.Ree4#
- 1...Qg6
- 2.Ree4#
- 1...Ra6
- 2.Qc5#
- 2.Qd5#
- 1...d6
- 2.Sxd6#
- 1...Rxe5!
- threat
- 1.Qc7+?
- 1...Kxd4
- 2.Bc3#
- 2.Rxg4#
- 2.Qc3#
- 1...Kb5
- 2.Sd6#
- 2.Qc5#
- 1...Rc5
- 2.Qxc5#
- 1...Sxc7!
- 1...Kxd4
- 1.Qc6+?
- 1...Kxd4
- 2.Bc3#
- 2.Rxg4#
- 2.Qc3#
- 1...Rc5
- 2.Qxc5#
- 1...dxc6!
- 1...Kxd4
- 1.Sb6+?
- Keys
- 1.Qg3!
- threat
- 2.Qd3#
- 1...Qxe2+
- 2.Bxe2#
- 1...Kxd4
- 2.Qc3#
- 1...Kb5
- 2.Qd3#
- 1...Qxg3
- 2.Re3#
- 1...Qxd4
- 2.Re5#
- 1...Qf3
- 2.Sd6#
- 1...Qf5
- 2.Sd6#
- 1...Qe4
- 2.Rexe4#
- 1...Qg6
- 2.Ree4#
- threat
- 1.Qg3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 4
- Sets
- Q(e);CHECK,OGATE,P_SPINQ(e),XR(E)::B(B),XQ(e)
- Q(e);N_PINR(E)::B(B)+R(E),XQ(e)
- Q(e);N_PINR(E)::B(B)+R(E)
- R(f);N_GUARD::QAR1(I),XR(f)
- R(f);N_GUARD::QAB1(I),XR(f)
- Tries
- Try
- S(J);CHECK
- Vars
- K(d);S_FLIGHT::QAR1(I)
- Refutation
- S(h);XS(J)
- Try
- Q(I);
- Threat
- S(J)
- Vars
- R(f);N_GUARD::QAB1(I),XR(f)
- Q(e);N_PINR(E)::B(B)+R(E)
- P(g);::S(J),XP(g)
- Refutation
- R(f);XQ(I)
- Try
- Q(I);CHECK
- Vars
- R(f);N_GUARD,P_SPINR(f)::QAR1(I),XR(f)
- Refutation
- S(h);XQ(I)
- Try
- Q(I);CHECK
- Vars
- R(f);N_GUARD,P_SPINR(f)::QAR1(I),XR(f)
- Refutation
- P(g);XQ(I)
- Try
- Actual
- Q(I);
- Threat
- QAB1(I)
- Vars
- Q(e);CHECK,OGATE,P_SPINQ(e),XR(E)::B(B),XQ(e)
- K(d);P-FLIGHT,P_SPINQ(e),XP(G)::QAB1(I)
- K(d);S_FLIGHT::QAB(I)
- Q(e);N_PINR(E),XQ(I)::B(B)+R(E)
- Q(e);N_PINR(E),P_PINB(D),P_SPINQ(e),XP(G)::B(B)+R(E)
- Q(e);::S(J)
- Q(e);N_PINR(E)::S(J)
- Q(e);N_PINR(E)::B(B)+R(E),XQ(e)
- Q(e);N_PINR(E)::B(B)+R(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).