MESON Chess Problem Database
Problem Display
PID: 187747 (B1r5/2p2b2/1p2P3/ppk4r/3R1Q1R/8/2p1K3/6b1 w - - 0 1)
Brenander, Oskar Wilhelm
Chess Weekly, 1909
#2
6 + 10
| 6490 | yacpdb | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Rxh4
- 2.Rd5#
- 2.Qe5#
- 1...Rd5
- 2.Rxd5#
- 1...Re5+
- 2.Qxe5#
- 1...Rf5
- 2.Qxf5#
- 1...Rg5
- 2.Qxg5#
- 1...Rh6
- 2.Rd5#
- 2.Qe5#
- 2.Qg5#
- 2.Qf5#
- 1...Rh7
- 2.Rd5#
- 2.Qe5#
- 2.Qg5#
- 2.Qf5#
- 1...Rhh8
- 2.Rd5#
- 2.Qe5#
- 2.Qg5#
- 2.Qf5#
- 1...Rxa8
- 2.Qxc7#
- 1...Rb8
- 2.Qxc7#
- 1...Rd8
- 2.Qxc7#
- 1...Re8
- 2.Qxc7#
- 1...Rf8
- 2.Qxc7#
- 1...Rg8
- 2.Qxc7#
- 1...Rch8
- 2.Qxc7#
- 1...Bxd4
- 2.Qxd4#
- 1...Be8
- 2.Qf8#
- 1...Bg8
- 2.Rxh5#
- 1...c1Q
- 2.Qxc1#
- 1...c1S+
- 2.Qxc1#
- 1...c1B
- 2.Qxc1#
- 1...c1R
- 2.Qxc1#
- 1...c6
- 2.Qd6#
- 1...Rxh4
- Tries
- 1.Rd3?
- threat
- 2.Rc3#
- 1...Re5+
- 2.Qxe5#
- 1...c1S+
- 2.Qxc1#
- 1...Rxa8
- 2.Qxc7#
- 1...Bd4
- 2.Qxd4#
- 1...b4
- 2.Qc4#
- 1...c1Q
- 2.Qxc1#
- 1...c1R
- 2.Qxc1#
- 1...c6
- 2.Qd6#
- 1...Bxe6!
- threat
- 1.Qe3?
- threat
- 2.Rd5#
- 2.Qc3#
- 1...c1S+
- 2.Qxc1#
- 1...Rxh4
- 2.Qc3#
- 2.Qe5#
- 1...Rxa8
- 2.Qc3#
- 1...Bxe6
- 2.Rd5#
- 1...Rd5
- 2.Rxd5#
- 1...b4
- 2.Rd5#
- 1...c1Q
- 2.Rd5#
- 2.Qxc1#
- 1...c1R
- 2.Rd5#
- 2.Qxc1#
- 1...Re5
- 2.Rd5#
- 2.Qxe5#
- 1...c6
- 2.Qc3#
- 1...Bxe3!
- threat
- 1.Qe4?
- threat
- 2.Qxc2#
- 2.Qc6#
- 1...Rxh4
- 2.Rd5#
- 2.Qd5#
- 2.Qe5#
- 1...Rxa8
- 2.Qxc2#
- 1...Bxd4
- 2.Qxd4#
- 1...Bxe6
- 2.Qc6#
- 1...Rd5
- 2.Rxd5#
- 2.Qxd5#
- 1...b4
- 2.Qc6#
- 1...c1Q
- 2.Qc6#
- 1...c1B
- 2.Qc2#
- 2.Qc6#
- 1...c1R
- 2.Qc6#
- 1...Re5
- 2.Qxe5#
- 1...Bg6
- 2.Qc6#
- 1...Be8
- 2.Qxc2#
- 1...c6
- 2.Qxc2#
- 1...c1S+!
- threat
- 1.exf7?
- threat
- 2.Rxh5#
- 1...Re5+
- 2.Qxe5#
- 1...c1S+
- 2.Qxc1#
- 1...Rxh4
- 2.Rd5#
- 2.Qe5#
- 1...Rxa8
- 2.Qxc7#
- 1...Bxd4
- 2.Qxd4#
- 1...Rd5
- 2.Rxd5#
- 1...Rf5
- 2.Qxf5#
- 1...Rg5
- 2.Qxg5#
- 1...Rh6
- 2.Rd5#
- 2.Qe5#
- 2.Qg5#
- 2.Qf5#
- 1...Rh7
- 2.Rd5#
- 2.Qe5#
- 2.Qg5#
- 2.Qf5#
- 1...Rhh8
- 2.Rd5#
- 2.Qe5#
- 2.Qg5#
- 2.Qf5#
- 1...Rd8
- 2.Qxc7#
- 1...Rg8
- 2.Qxc7#
- 1...Rch8
- 2.Qxc7#
- 1...Re8+!
- threat
- 1.Rd3?
- Keys
- 1.Rd8!
- 1...Re5+
- 2.Qxe5#
- 1...c1S+
- 2.Qxc1#
- 1...Rxh4
- 2.Rd5#
- 1...Rxa8
- 2.Qxc7#
- 1...Rxd8
- 2.Qxc7#
- 1...Bxe6
- 2.Qf8#
- 1...Bd4
- 2.Qxd4#
- 1...b4
- 2.Qc4#
- 1...c1Q
- 2.Qxc1#
- 1...c1B
- 2.Qxc1#
- 1...c1R
- 2.Qxc1#
- 1...Rd5
- 2.Rxd5#
- 1...Rf5
- 2.Qxf5#
- 1...Rg5
- 2.Qxg5#
- 1...Rh6
- 2.Rd5#
- 2.Qe5#
- 2.Qg5#
- 2.Qf5#
- 1...Rh7
- 2.Rd5#
- 2.Qe5#
- 2.Qg5#
- 2.Qf5#
- 1...Rh8
- 2.Rd5#
- 2.Qe5#
- 2.Qg5#
- 2.Qf5#
- 1...Rb8
- 2.Qxc7#
- 1...Bf2
- 2.Qxf2#
- 1...Bh2
- 2.Qe3#
- 2.Qf2#
- 2.Qd4#
- 1...Be3
- 2.Qxe3#
- 1...Bg6
- 2.Qf8#
- 1...Be8
- 2.Qf8#
- 1...Bg8
- 2.Rxh5#
- 2.Qf8#
- 1...a4
- 2.Qb4#
- 1...c6
- 2.Qd6#
- 1...Re5+
- 1.Rd8!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 5
- Sets
- R(f);N_GUARD::R1(B),XR(f)
- R(f);CHECK,N_GUARD::QAR2(C),XR(f)
- R(f);N_GUARD::QAR(C),XR(f)
- R(j);N_GUARD,XB(F)::QAR2(C),XP(h)
- R(j);N_GUARD::QAR2(C),XP(h)
- R(j);N_GUARD,P_PINP(E)::QAR2(C),XP(h)
- B(a);OGATE,XR(B)::QAB1(C),XB(a)
- B(i);OGATE::QAB(C)
- B(i);N_GUARD::R(D),XR(f)
- P(b);OGATEB::QAR(C),XQ(b)
- P(b);CHECK,OGATEB::QAR(C),XS(b)
- P(b);OGATEB::QAR(C),XB(b)
- P(b);OGATEB::QAR(C),XR(b)
- P(h);N_GUARD::QAB1(C)
- Tries
- Try
- R(B);
- Threat
- R(B)
- Vars
- R(f);CHECK,N_GUARD::QAR2(C),XR(f)
- P(b);CHECK,OGATEB::QAR(C),XS(b)
- R(j);N_GUARD,XB(F)::QAR2(C),XP(h)
- B(a);N_GUARD::QAB1(C),XB(a)
- P(d);N_GUARD::QAR1(C)
- P(b);OGATEB::QAR(C),XQ(b)
- P(b);OGATEB::QAR(C),XR(b)
- P(h);N_GUARD::QAB1(C)
- Refutation
- B(i);XP(E)
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- P(b);CHECK,OGATEB::QAR(C),XS(b)
- R(j);XB(F)::QAR2(C)
- B(i);XP(E)::QAB(C)+R(B),DCHECK
- R(f);::QAB(C)+R(B),DCHECK,XR(f)
- P(d);::QAB(C)+R(B),DCHECK
- P(h);::QAR2(C)
- Refutation
- B(a);XQ(C)
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- R(j);XB(F)::QAR(C),XP(b)
- B(a);OGATE,XR(B)::QAB1(C),XB(a)
- B(i);XP(E)::QAR1(C)
- P(d);::QAR1(C)
- P(b);::QAR1(C)
- R(f);N_GUARD,P_PINQ(C)::QAR2(C),XR(f)
- B(i);::QAR1(C)
- B(i);::QAR(C),XP(b)
- P(h);::QAR(C),XP(b)
- Refutation
- P(b);CHECK
- Try
- P(E);XB(i)
- Threat
- R(D),XR(f)
- Vars
- R(f);CHECK,N_GUARD::QAR2(C),XR(f)
- P(b);CHECK,OGATEB::QAR(C),XS(b)
- R(j);N_GUARD,XB(F)::QAR2(C),XP(h)
- B(a);OGATE,XR(B)::QAB1(C),XB(a)
- R(f);N_GUARD::R1(B),XR(f)
- R(f);N_GUARD::QAR(C),XR(f)
- R(j);N_GUARD::QAR2(C),XP(h)
- Refutation
- R(j);CHECK
- Try
- Actual
- R(B);
- Vars
- R(f);CHECK,N_GUARD::QAR2(C),XR(f)
- P(b);CHECK,OGATEB::QAR(C),XS(b)
- R(f);N_GUARD,XR(D)::R1(B)
- R(j);N_GUARD,XB(F)::QAR2(C),XP(h)
- R(j);N_GUARD,XR(B)::QAR2(C),XP(h)
- B(i);OGATE,XP(E)::QAB(C)
- B(a);N_GUARD::QAB1(C),XB(a)
- P(d);N_GUARD::QAR1(C)
- P(b);OGATEB::QAR(C),XQ(b)
- P(b);OGATEB::QAR(C),XB(b)
- P(b);OGATEB::QAR(C),XR(b)
- R(f);N_GUARD::R1(B),XR(f)
- R(f);N_GUARD::QAR(C),XR(f)
- R(j);N_GUARD::QAR2(C),XP(h)
- B(a);N_GUARD::QAB(C),XB(a)
- B(i);OGATE::QAB(C)
- P(c);N_GUARD::QAB1(C)
- P(h);N_GUARD::QAB1(C)
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).