MESON Chess Problem Database
Problem Display
PID: 19051 (3R4/8/1pQ1p3/r4p1q/8/PbBB4/1K3P2/3k4 w - - 0 1)
Moller, Jorgen Thorvald
Tidskrift for Schack, 1911
#2
7 + 7
| 5424 | Versunkene Schatze | 1998 |
SOLUTION
- SOUND
- Sets
- 1...Qe2+
- 2.Bc2#
- 1...Qf3
- 2.Qxf3#
- 1...Qg6
- 2.Qf3#
- 1...Qf7
- 2.Qh1#
- 2.Qf3#
- 1...Qe8
- 2.Qh1#
- 2.Qf3#
- 1...Qh1
- 2.Qxh1#
- 1...Qh2
- 2.Qf3#
- 1...Qh4
- 2.Qf3#
- 1...Qg5
- 2.Qf3#
- 1...Qh6
- 2.Qf3#
- 1...Qh7
- 2.Qf3#
- 1...Qh8
- 2.Qf3#
- 1...Rxa3
- 2.Bc4#
- 1...Ra4
- 2.Bc4#
- 1...Ra6
- 2.Bc4#
- 1...Ba4
- 2.Bb5#
- 1...b5
- 2.Bc4#
- 1...Qe2+
- Tries
- 1.Bxa5?
- threat
- 2.Bc4#
- 2.Qc1#
- 1...Qe2+
- 2.Bc2#
- 1...bxa5
- 2.Qc1#
- 1...Qf3
- 2.Qxf3#
- 2.Qc1#
- 1...Qg4
- 2.Qc1#
- 1...Qf7
- 2.Qh1#
- 2.Qf3#
- 2.Qc1#
- 1...Qe8
- 2.Qh1#
- 2.Qf3#
- 2.Qc1#
- 1...Qh1
- 2.Qxh1#
- 2.Qc1#
- 1...Qh2
- 2.Qf3#
- 2.Qc1#
- 1...Qh3
- 2.Qc1#
- 1...Qh4
- 2.Qf3#
- 2.Qc1#
- 1...Qg5
- 2.Qf3#
- 1...Qh6
- 2.Qf3#
- 1...Qh7
- 2.Qf3#
- 2.Qc1#
- 1...Bc2
- 2.Qxc2#
- 1...Bc4
- 2.Bxc4#
- 1...Bd5
- 2.Qc1#
- 2.Qc2#
- 1...f4
- 2.Qc1#
- 1...Qh8+!
- threat
- 1.Qe4?
- threat
- 2.Bc2#
- 2.Be2#
- 2.Qe1#
- 1...Qe2+
- 2.Bc2#
- 2.Bxe2#
- 2.Qxe2#
- 1...Rd5
- 2.Qe1#
- 1...Qh1
- 2.Bc2#
- 2.Be2#
- 2.Qxh1#
- 2.Qe2#
- 1...Re5
- 2.Bc2#
- 2.Be2#
- 1...Bc2
- 2.Bxc2#
- 2.Be2#
- 2.Qe1#
- 1...Bd5
- 2.Bc2#
- 2.Qe1#
- 1...fxe4!
- threat
- 1.Qb5?
- threat
- 2.Bc2#
- 2.Be2#
- 2.Bc4#
- 2.Qxb3#
- 1...Qe2+
- 2.Bc2#
- 2.Bxe2#
- 1...Rxa3
- 2.Bc2#
- 2.Be2#
- 2.Bc4#
- 1...Qf3
- 2.Bc2#
- 2.Be2#
- 2.Qxb3#
- 1...Qg4
- 2.Bc2#
- 2.Be2#
- 2.Qxb3#
- 1...Qf7
- 2.Bc2#
- 2.Be2#
- 2.Qxb3#
- 1...Qe8
- 2.Bc2#
- 2.Be2#
- 2.Qxb3#
- 1...Qh1
- 2.Bc2#
- 2.Be2#
- 2.Qxb3#
- 1...Qh2
- 2.Bc2#
- 2.Be2#
- 2.Qxb3#
- 1...Qh3
- 2.Bc2#
- 2.Be2#
- 2.Qxb3#
- 1...Qh4
- 2.Bc2#
- 2.Be2#
- 2.Qxb3#
- 1...Qg5
- 2.Bc2#
- 2.Be2#
- 2.Qxb3#
- 1...Qh6
- 2.Bc2#
- 2.Be2#
- 2.Qxb3#
- 1...Qh7
- 2.Bc2#
- 2.Be2#
- 2.Qxb3#
- 1...Qh8
- 2.Bc2#
- 2.Be2#
- 2.Qxb3#
- 1...Ra7
- 2.Bc2#
- 2.Be2#
- 2.Qxb3#
- 1...Ra8
- 2.Bc2#
- 2.Be2#
- 2.Qxb3#
- 1...Ba2
- 2.Bc2#
- 2.Be2#
- 2.Bc4#
- 1...Bc2
- 2.Bxc2#
- 2.Be2#
- 1...Ba4
- 2.Bb1#
- 2.Bf1#
- 2.Bc2#
- 2.Be2#
- 2.Bc4#
- 2.Be4#
- 2.Bxf5#
- 1...Bc4
- 2.Bxc4#
- 1...Bd5
- 2.Bc2#
- 1...f4
- 2.Bc2#
- 2.Be2#
- 2.Qxb3#
- 1...Rxb5!
- threat
- 1.Qc4?
- threat
- 2.Bc2#
- 2.Be2#
- 2.Qxb3#
- 1...Qe2+
- 2.Bc2#
- 2.Bxe2#
- 1...Rxa3
- 2.Bb1#
- 2.Bf1#
- 2.Bc2#
- 2.Be2#
- 2.Be4#
- 2.Bxf5#
- 1...Rd5
- 2.Qxb3#
- 1...Rb5
- 2.Bc2#
- 2.Be2#
- 1...Ba2
- 2.Bc2#
- 2.Be2#
- 1...Bc2
- 2.Bxc2#
- 2.Be2#
- 1...Ba4
- 2.Bc2#
- 2.Be2#
- 1...Bxc4!
- threat
- 1.Qxe6?
- threat
- 2.Bc2#
- 2.Be2#
- 2.Qxb3#
- 2.Qe1#
- 1...Qe2+
- 2.Bc2#
- 2.Bxe2#
- 2.Qxe2#
- 1...Rxa3
- 2.Bc2#
- 2.Be2#
- 2.Bc4#
- 2.Qe1#
- 1...Rd5
- 2.Qe1#
- 1...Qf7
- 2.Bc2#
- 2.Be2#
- 2.Qe1#
- 2.Qe2#
- 1...Qe8
- 2.Bc2#
- 2.Be2#
- 2.Qxb3#
- 1...Qh1
- 2.Bc2#
- 2.Be2#
- 2.Qxb3#
- 2.Qe2#
- 1...Rb5
- 2.Bc2#
- 2.Be2#
- 2.Qe1#
- 1...Re5
- 2.Qxb3#
- 1...Ba2
- 2.Bc2#
- 2.Be2#
- 2.Qe1#
- 1...Bc2
- 2.Bxc2#
- 2.Be2#
- 2.Qe1#
- 1...Ba4
- 2.Bc2#
- 2.Be2#
- 2.Bb5#
- 2.Qe1#
- 1...Bc4
- 2.Bc2#
- 2.Be2#
- 2.Qe1#
- 1...Bd5
- 2.Bc2#
- 2.Qe1#
- 1...Bxe6!
- threat
- 1.Bxa5?
- Keys
- 1.Qa4!
- threat
- 2.Bb5#
- 2.Qxb3#
- 1...Qe2+
- 2.Bc2#
- 1...Rxa4
- 2.Bc4#
- 1...Bxa4
- 2.Bb5#
- 1...Rd5
- 2.Qxb3#
- 1...Qf3
- 2.Qxb3#
- 1...Qg4
- 2.Qxb3#
- 1...Qf7
- 2.Qxb3#
- 1...Qe8
- 2.Qxb3#
- 1...Qh1
- 2.Qxb3#
- 1...Qh2
- 2.Qxb3#
- 1...Qh3
- 2.Qxb3#
- 1...Qh4
- 2.Qxb3#
- 1...Qg5
- 2.Qxb3#
- 1...Qh6
- 2.Qxb3#
- 1...Qh7
- 2.Qxb3#
- 1...Qh8
- 2.Qxb3#
- 1...Rb5
- 2.Bxb5#
- 1...Rc5
- 2.Qxb3#
- 1...Re5
- 2.Qxb3#
- 1...Ra7
- 2.Qxb3#
- 1...Ra8
- 2.Qxb3#
- 1...Bc2
- 2.Bb5#
- 2.Qxc2#
- 1...f4
- 2.Qxb3#
- 1...b5
- 2.Bf1#
- 2.Bc4#
- 2.Bxb5#
- 2.Qxb3#
- threat
- 1.Qa4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 8
- ADDED MATES = 11
- REMOVED MATES = 4
- Sets
- Q(e);CHECK,SBLOCK::R(G)+B(E),DCHECK
- Q(e);N_GUARD::QAB(F),XQ(e)
- Q(e);N_GUARD::QAB(F)
- Q(e);N_GUARD::QAR(F),XQ(e)
- Q(e);N_GUARD,P_PINP(B)::QAB(F)
- Q(e);N_GUARD,P_PINB(D)::QAB(F)
- R(c);N_GUARD,XP(C)::R(G)+B(E)
- R(c);N_GUARD::R(G)+B(E)
- B(b);N_GUARD::R(G)+B(E)
- P(f);S_CUTR(c)::R(G)+B(E)
- Tries
- Try
- B(D);XR(c)
- Threat
- DUALS(2)
- Vars
- Q(e);CHECK,SBLOCK::R(G)+B(E),DCHECK
- P(f);XB(D)::QAR1(F)
- Q(e);::QAR1(F)
- Q(e);N_GUARD::QAB(F)
- B(b);N_GUARD::QAB1(F),XB(b)
- B(b);::R(G)+B(E),XB(b)
- P(d);::QAR1(F)
- Refutation
- Q(e);CHECK
- Try
- Q(F);
- Threat
- DUALS(3)
- Vars
- R(c);::QAR1(F)
- Refutation
- P(d);XQ(F)
- Try
- Q(F);
- Threat
- DUALS(4)
- Vars
- B(b);::R(G)+B(E),XB(b)
- B(b);::B(E)
- Refutation
- R(c);XQ(F)
- Try
- Q(F);
- Threat
- DUALS(3)
- Vars
- R(c);::QAB(F),XB(b)
- Refutation
- B(b);XQ(F)
- Try
- Q(F);XP(g)
- Threat
- DUALS(4)
- Vars
- R(c);::QAR1(F)
- R(c);::QAB(F),XB(b)
- Refutation
- B(b);XQ(F)
- Try
- Actual
- Q(F);P_PINB(b)
- Threat
- DUALS(2)
- Vars
- Q(e);CHECK,SBLOCK::R(G)+B(E),DCHECK
- R(c);N_GUARD,N_SPINB(b),XQ(F)::R(G)+B(E)
- B(b);N_SPINB(b),XQ(F)::R(G)+B(E)
- R(c);::QAB(F),XB(b)
- Q(e);::QAB(F),XB(b)
- Q(e);P_PINP(B)::QAB(F),XB(b)
- Q(e);P_PINB(D)::QAB(F),XB(b)
- R(c);::R(G)+B(E),XR(c)
- P(d);::QAB(F),XB(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).