MESON Chess Problem Database
Problem Display
PID: 21881 (8/8/6pp/1R4qk/4R2P/5K2/8/3Bb3 w - - 0 1)
Letzen, Einar
1st Prize, Sveriges Schackforbund, 1921
#2
5 + 5
| 5501 | Chess Cameos | 1936 |
| 3098 | FIDE Album (1914-1944) (I) | 1971 |
SOLUTION
- SOUND
- Sets
- 1...Qc5
- 2.Kg2#
- 1...Qd5
- 2.Kg2#
- 2.Ke3#
- 1...Qe5
- 2.Kg2#
- 2.Ke3#
- 1...Qf5+
- 2.Kg2#
- 2.Ke3#
- 1...Bd2
- 2.Kf2#
- 1...Bf2
- 2.Kxf2#
- 1...Bc3
- 2.Kf2#
- 1...Bg3
- 2.Kg2#
- 1...Bb4
- 2.Kf2#
- 1...Ba5
- 2.Kf2#
- 1...Qc5
- Tries
- 1.Ke2?
- threat
- 2.Kxe1#
- 2.Kf1#
- 2.Kd3#
- 1...Bxh4
- 2.Kf1#
- 2.Kd3#
- 1...Qd5
- 2.Kxe1#
- 2.Kf1#
- 2.Ke3#
- 1...Qf5
- 2.Kxe1#
- 2.Kd3#
- 2.Ke3#
- 1...Bd2
- 2.Kf1#
- 2.Kf2#
- 2.Kd3#
- 1...Bf2
- 2.Kf1#
- 2.Kxf2#
- 2.Kd3#
- 1...Bc3
- 2.Kf1#
- 2.Kf2#
- 2.Kd3#
- 1...Bg3
- 2.Kf1#
- 2.Kd3#
- 1...Bb4
- 2.Kf1#
- 2.Kf2#
- 2.Kd3#
- 1...Ba5
- 2.Kf1#
- 2.Kf2#
- 2.Kd3#
- 1...Qxb5+!
- threat
- 1.Rd4?
- 1...Qd5+
- 2.Ke3#
- 1...Qf5+
- 2.Kg2#
- 2.Ke3#
- 1...Bxh4
- 2.Ke4#
- 1...Qc5
- 2.Kg2#
- 2.Ke3#
- 1...Qe5
- 2.Kg2#
- 1...Bd2
- 2.Kf2#
- 1...Bf2
- 2.Kxf2#
- 1...Bc3
- 2.Kf2#
- 1...Bg3
- 2.Kg2#
- 1...Bb4
- 2.Kf2#
- 1...Ba5
- 2.Kf2#
- 1...Qxb5!
- 1...Qd5+
- 1.Rf4?
- threat
- 2.Ke3#
- 2.Ke4#
- 1...Qd5+
- 2.Ke3#
- 1...Qc5
- 2.Kg2#
- 2.Ke4#
- 1...Qe5
- 2.Kg2#
- 1...Qf5
- 2.Kg2#
- 2.Ke3#
- 1...Bd2
- 2.Kf2#
- 2.Ke4#
- 1...Bf2
- 2.Kxf2#
- 2.Ke4#
- 1...Qxb5!
- threat
- 1.Rc5?
- 1...Qf5+
- 2.Kg2#
- 2.Ke3#
- 1...Qxc5
- 2.Kg2#
- 1...Qd5
- 2.Kg2#
- 2.Ke3#
- 1...Qe5
- 2.Kg2#
- 2.Ke3#
- 1...Bd2
- 2.Kf2#
- 1...Bf2
- 2.Kxf2#
- 1...Bc3
- 2.Kf2#
- 1...Bg3
- 2.Kg2#
- 1...Bb4
- 2.Kf2#
- 1...Ba5
- 2.Kf2#
- 1...Bxh4!
- 1...Qf5+
- 1.Rbe5?
- 1...Qf5+
- 2.Kg2#
- 2.Ke3#
- 1...Qxe5
- 2.Kg2#
- 2.Ke3#
- 1...Bd2
- 2.Kf2#
- 1...Bf2
- 2.Kxf2#
- 1...Bc3
- 2.Kf2#
- 1...Bg3
- 2.Kg2#
- 1...Bb4
- 2.Kf2#
- 1...Ba5
- 2.Kf2#
- 1...Bxh4!
- 1...Qf5+
- 1.hxg5?
- threat
- 2.Kg2#
- 2.Ke3#
- 1...Bd2
- 2.Kf2#
- 2.Kg2#
- 2.Kg3#
- 1...Bf2
- 2.Kxf2#
- 2.Kg2#
- 1...hxg5!
- threat
- 1.Ke2?
- Keys
- 1.Rc4!
- 1...Qd5+
- 2.Ke3#
- 1...Qf5+
- 2.Kg2#
- 2.Ke3#
- 1...Qxb5
- 2.Kg2#
- 2.Ke3#
- 1...Bxh4
- 2.Ke4#
- 1...Qc5
- 2.Kg2#
- 1...Qe5
- 2.Kg2#
- 1...Bd2
- 2.Kf2#
- 1...Bf2
- 2.Kxf2#
- 1...Bc3
- 2.Kf2#
- 1...Bg3
- 2.Kg2#
- 1...Bb4
- 2.Kf2#
- 1...Ba5
- 2.Kf2#
- 1...Qd5+
- 1.Rc4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- Q(b);::B(A)+K(B)
- B(a);::B(A)+K(B)
- B(a);::B(A)+K(B),XB(a)
- Tries
- Try
- K(B);S_FLIGHT
- Threat
- DUALS(3)
- Refutation
- Q(b);CHECK,N_SPINQ(b),XR(E)
- Try
- R(C);
- Vars
- Q(b);CHECK::B(A)+K(B)
- B(a);SBLOCK,XP(D)::B(A)+K(B)
- Q(b);::B(A)+K(B)
- B(a);::B(A)+K(B)
- B(a);::B(A)+K(B),XB(a)
- Refutation
- Q(b);N_SPINQ(b),XR(E)
- Try
- R(C);
- Threat
- DUALS(2)
- Vars
- Q(b);CHECK::B(A)+K(B)
- Q(b);::B(A)+K(B)
- Refutation
- Q(b);N_SPINQ(b),XR(E)
- Try
- R(E);
- Vars
- Q(b);N_SPINQ(b),XR(E)::B(A)+K(B)
- B(a);::B(A)+K(B)
- B(a);::B(A)+K(B),XB(a)
- Refutation
- B(a);XP(D)
- Try
- R(E);
- Vars
- B(a);::B(A)+K(B)
- B(a);::B(A)+K(B),XB(a)
- Refutation
- B(a);XP(D)
- Try
- P(D);XQ(b)
- Threat
- DUALS(2)
- Refutation
- P(e);P_SPINP(e),XP(D)
- Try
- Actual
- R(C);
- Vars
- Q(b);CHECK::B(A)+K(B)
- B(a);SBLOCK,XP(D)::B(A)+K(B)
- Q(b);::B(A)+K(B)
- B(a);::B(A)+K(B)
- B(a);::B(A)+K(B),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).