MESON Chess Problem Database
Problem Display
PID: 143969 (K3B3/2Rn2Br/1p1pppp1/3kP2n/Q6N/8/b3R2p/3r3q w - - 0 1)
Dobbs, Gilbert S
Tidskrift for Schack, 1909
#2
8 + 13
SOLUTION
- SOUND
- Sets
- 1...Qg2
- 2.Qxd1#
- 1...Qe4
- 2.Qxe4#
- 1...Qe1
- 2.Qe4#
- 1...Qf1
- 2.Qe4#
- 1...Qg1
- 2.Qe4#
- 1...Rd4
- 2.Qc6#
- 1...Bb1
- 2.Qc4#
- 1...Bc4
- 2.Qxc4#
- 1...Sc5
- 2.Bc6#
- 1...dxe5
- 2.Qxd7#
- 1...Qg2
- Tries
- 1.Sf3?
- threat
- 2.Qc6#
- 2.Qxa2#
- 2.Qe4#
- 1...Sxe5
- 2.Qb5#
- 2.Qe4#
- 1...dxe5
- 2.Qc6#
- 2.Qxd7#
- 1...Ra1
- 2.Rd2#
- 2.Qc6#
- 2.Qd4#
- 2.Qe4#
- 1...Rb1
- 2.Rd2#
- 2.Qc6#
- 2.Qd4#
- 2.Qe4#
- 1...Rc1
- 2.Rd2#
- 2.Qd4#
- 2.Qe4#
- 1...Rd2
- 2.Rxd2#
- 2.Qc6#
- 2.Qe4#
- 1...Rd3
- 2.Qc6#
- 2.Qe4#
- 1...Rd4
- 2.Qc6#
- 2.Qxd4#
- 1...Bb1
- 2.Qb3#
- 2.Qc6#
- 2.Qc4#
- 1...Bb3
- 2.Qxb3#
- 2.Qc6#
- 2.Qe4#
- 1...Bc4
- 2.Qc6#
- 2.Qxc4#
- 1...Sg3
- 2.Qc6#
- 2.Qxa2#
- 1...Sc5
- 2.Bc6#
- 1...Sb8
- 2.Qb5#
- 2.Qxa2#
- 2.Qe4#
- 1...b5
- 2.Qxa2#
- 2.Qe4#
- 1...f5
- 2.Qc6#
- 2.Qxa2#
- 1...Qxf3!
- threat
- 1.Sf5?
- threat
- 2.Se7#
- 2.Qc6#
- 2.Qxa2#
- 1...Rxg7
- 2.Qc6#
- 2.Qxa2#
- 1...Sxe5
- 2.Se3#
- 2.Se7#
- 2.Qb5#
- 1...dxe5
- 2.Qc6#
- 2.Qxd7#
- 2.Qxa2#
- 1...exf5
- 2.Bf7#
- 1...Qe4
- 2.Qxe4#
- 1...Qf3
- 2.Se7#
- 2.Qc6#
- 1...Ra1
- 2.Se7#
- 2.Qc6#
- 2.Qd4#
- 1...Rb1
- 2.Se7#
- 2.Qc6#
- 2.Qd4#
- 1...Rc1
- 2.Se7#
- 2.Qd4#
- 1...Rd2
- 2.Se7#
- 2.Qc6#
- 1...Rd3
- 2.Se7#
- 2.Qc6#
- 1...Rd4
- 2.Se7#
- 2.Qc6#
- 2.Qxd4#
- 1...Bb1
- 2.Se7#
- 2.Qb3#
- 2.Qc6#
- 2.Qc4#
- 1...Bb3
- 2.Se7#
- 2.Qxb3#
- 2.Qc6#
- 1...Bc4
- 2.Qc6#
- 2.Qxc4#
- 1...Sc5
- 2.Se7#
- 2.Bc6#
- 1...Sb8
- 2.Se7#
- 2.Qb5#
- 2.Qxa2#
- 1...b5
- 2.Se7#
- 2.Qxa2#
- 1...gxf5!
- threat
- 1.Sxg6?
- threat
- 2.Se7#
- 1...dxe5
- 2.Qxd7#
- 1...Bc4
- 2.Qxc4#
- 1...Qe4
- 2.Qxe4#
- 1...Rxg7!
- threat
- 1.Sf3?
- Keys
- 1.Sg2!
- threat
- 2.Qe4#
- 1...Qxg2
- 2.Qxd1#
- 1...dxe5
- 2.Qxd7#
- 1...Bc4
- 2.Qxc4#
- 1...Rd4
- 2.Qc6#
- 1...Bb1
- 2.Qc4#
- 1...Sg3
- 2.Sf4#
- 1...Sc5
- 2.Bc6#
- 1...f5
- 2.Se3#
- threat
- 1.Sg2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 4
- Sets
- Q(b);N_GUARD::QAR(B),XR(a)
- Q(b);N_GUARD::QAB1(B),XQ(b)
- Q(b);N_GUARD::QAB1(B)
- R(a);SBLOCK::QAB1(B)
- B(c);N_GUARD::QAB1(B)
- B(c);N_GUARD::QAB1(B),XB(c)
- S(l);OGATE,SBLOCK::B(H)
- P(h);OGATEB,XP(D)::QAR2(B),XS(l)
- Tries
- Try
- S(C);
- Threat
- DUALS(3)
- Vars
- S(l);OGATE,SBLOCK::B(H)
- Refutation
- Q(b);XS(C)
- Try
- S(C);
- Threat
- DUALS(3)
- Vars
- P(i);OGATEB,XS(C)::B(H)
- Q(b);N_GUARD::QAB1(B),XQ(b)
- Refutation
- P(k);XS(C)
- Try
- S(C);XP(k)
- Threat
- S(C)
- Vars
- P(h);OGATEB,XP(D)::QAR2(B),XS(l)
- B(c);N_GUARD::QAB1(B),XB(c)
- Q(b);N_GUARD::QAB1(B),XQ(b)
- Refutation
- R(m);XB(F)
- Try
- Actual
- S(C);
- Threat
- QAB1(B)
- Vars
- Q(b);N_GUARD,XS(C)::QAR(B),XR(a)
- P(h);OGATEB,XP(D)::QAR2(B),XS(l)
- B(c);N_GUARD::QAB1(B),XB(c)
- R(a);SBLOCK::QAB1(B)
- B(c);N_GUARD::QAB1(B)
- S(f);N_GUARD::S(C)
- S(l);OGATE,SBLOCK::B(H)
- P(j);::S(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).