MESON Chess Problem Database
Problem Display
PID: 147433 (3R3n/4P2Q/K7/1Bk5/p1n3P1/P1r5/b2P4/2R3b1 w - - 0 1)
Letzen, Einar
Eskilstuna Kuriren, 1922
(First published on Sat Apr 8 1922)
#2
9 + 7
| 14868 | Pirnie Collection | 2013 |
SOLUTION
- SOUND
- Sets
- 1...Rb3
- 2.Rxc4#
- 2.Qf5#
- 2.Qh5#
- 1...Re3
- 2.d4#
- 1...Rg3
- 2.Qf5#
- 2.Qh5#
- 1...Rh3
- 2.Qf5#
- 1...Bh2
- 2.d4#
- 1...Se3
- 2.d4#
- 1...Rb3
- Tries
- 1.Qd3?
- threat
- 2.Rd5#
- 2.Rc8#
- 2.Qd5#
- 1...Rxa3
- 2.Qxa3#
- 2.Qd6#
- 1...Sxd2
- 2.Rc8#
- 2.Qd6#
- 1...Sxa3
- 2.Qd6#
- 1...Bh2
- 2.Rd5#
- 2.Qd4#
- 2.Qd5#
- 1...Bd4
- 2.Qxd4#
- 1...Sb2
- 2.Rc8#
- 2.Qd6#
- 1...Se3
- 2.Rc8#
- 2.Qd4#
- 2.Qd6#
- 1...Sa5
- 2.Qd6#
- 1...Se5
- 2.Qd6#
- 1...Sb6
- 2.Qd6#
- 1...Sd6
- 2.Qxd6#
- 1...Rxd3!
- threat
- 1.Qg6?
- threat
- 2.Qc6#
- 1...Rxa3
- 2.Qd6#
- 1...Sxa3
- 2.Qd6#
- 1...Sd6
- 2.Qxd6#
- 1...Sa5
- 2.Qb6#
- 2.Qd6#
- 1...Se5
- 2.Qb6#
- 2.Qd6#
- 1...Sxg6!
- threat
- 1.Qh6?
- threat
- 2.Qc6#
- 1...Rxa3
- 2.Qd6#
- 1...Sxa3
- 2.Qd6#
- 1...Sd6
- 2.Qxd6#
- 1...Se5
- 2.Qb6#
- 2.Qd6#
- 1...Sa5
- 2.Qb6#
- 2.Qd6#
- 1...Sg6!
- threat
- 1.e8Q?
- threat
- 2.Qc6#
- 2.Qc7#
- 1...Rxa3
- 2.Qhe7#
- 2.Qee7#
- 2.Qf8#
- 1...Sxa3
- 2.Qhe7#
- 2.Qee7#
- 2.Qf8#
- 1...Bh2
- 2.Qc6#
- 2.d4#
- 1...Sa5
- 2.Qa7#
- 2.Qhe7#
- 2.Qee7#
- 2.Qf8#
- 1...Se5
- 2.Qa7#
- 2.Qhe7#
- 2.Qee7#
- 2.Qf8#
- 1...Sf7
- 2.Qc6#
- 1...Sd6!
- threat
- 1.Qd3?
- Keys
- 1.Qh2!
- threat
- 2.Qc7#
- 1...Rxa3
- 2.Qd6#
- 1...Bxh2
- 2.d4#
- 1...Sxa3
- 2.Qd6#
- 1...Sd6
- 2.Qxd6#
- 1...Rg3
- 2.Qh5#
- 1...Sa5
- 2.Qxg1#
- 2.Qd6#
- 1...Se5
- 2.Qxg1#
- threat
- 1.Qh2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 3
- Sets
- R(c);P_SPINS(e),S_CUTB(a)::P(B)
- R(c);P_SPINS(e)::QAR(H)
- B(a);N_GUARD::P(B)
- S(e);P_SPINR(c),S_CUTB(a)::P(B)
- Tries
- Try
- Q(H);
- Threat
- DUALS(3)
- Vars
- S(e);N_GUARD,P_SPINR(c),XP(C)::QAB1(H)
- B(a);N_GUARD::QAB1(H),XB(a)
- S(e);N_GUARD,P_SPINR(c)::QAB1(H)
- S(e);N_GUARD,P_SPINR(c)::QAB1(H),XS(e)
- Refutation
- R(c);P_SPINS(e),XQ(H)
- Try
- Q(H);
- Threat
- QAR1(H)
- Vars
- R(c);P_SPINS(e),XP(C)::QAB1(H)
- S(e);N_GUARD,P_SPINR(c),XP(C)::QAB1(H)
- S(e);N_GUARD,P_SPINR(c)::QAB1(H),XS(e)
- Refutation
- S(g);XQ(H)
- Try
- Q(H);
- Threat
- QAR1(H)
- Vars
- R(c);P_SPINS(e),XP(C)::QAB1(H)
- S(e);N_GUARD,P_SPINR(c),XP(C)::QAB1(H)
- S(e);N_GUARD,P_SPINR(c)::QAB1(H),XS(e)
- Refutation
- S(g);
- Try
- P(G);
- Threat
- DUALS(2)
- Vars
- S(g);::QAR1(G)
- Refutation
- S(e);P_SPINR(c)
- Try
- Actual
- Q(H);
- Threat
- QAR2(H)
- Vars
- R(c);P_SPINS(e),XP(C)::QAB1(H)
- B(a);N_GUARD,XQ(H)::P(B)
- S(e);N_GUARD,P_SPINR(c),XP(C)::QAB1(H)
- S(e);N_GUARD,P_SPINR(c)::QAB1(H),XS(e)
- R(c);P_SPINS(e)::QAR(H)
- S(e);N_GUARD,P_SPINR(c)::QAB(H),XB(a)
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).