MESON Chess Problem Database
Problem Display
PID: 195181 (B7/5qn1/7r/2pR4/1pK1k1NN/8/4P1n1/2Q5 w - - 0 1)
Dobbs, Gilbert S
Pittsburgh Gazette-Times, 1918
#2
7 + 7
| 6490 | yacpdb | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Qxd5+
- 2.Bxd5#
- 1...Qh5
- 2.Sf2#
- 2.Rd4#
- 2.Re5#
- 1...Qe6
- 2.Sf2#
- 1...Qg6
- 2.Sf2#
- 2.Rd4#
- 2.Re5#
- 2.Rd6#
- 1...Qe8
- 2.Sf2#
- 2.Rd4#
- 2.Re5#
- 1...Qg8
- 2.Sf2#
- 1...Qf1
- 2.Rd4#
- 2.Re5#
- 2.Rd6#
- 1...Qf2
- 2.Sxf2#
- 2.Rd4#
- 2.Re5#
- 2.Rd6#
- 1...Qf3
- 2.Rd4#
- 2.Re5#
- 2.Rd6#
- 2.exf3#
- 1...Qf4
- 2.Rd4#
- 2.Re5#
- 2.Rd6#
- 2.Qb1#
- 2.Qc2#
- 1...Qf5
- 2.Rd4#
- 2.Re5#
- 1...Qf6
- 2.Rd4#
- 2.Re5#
- 2.Rd6#
- 1...Qa7
- 2.Sf2#
- 2.Rd4#
- 2.Re5#
- 1...Qb7
- 2.Sf2#
- 2.Re5#
- 1...Qc7
- 2.Sf2#
- 2.Rd4#
- 2.Re5#
- 1...Qd7
- 2.Sf2#
- 2.Rd4#
- 2.Re5#
- 1...Qe7
- 2.Sf2#
- 2.Rd4#
- 2.Re5#
- 1...Qf8
- 2.Rd4#
- 2.Re5#
- 1...Re6
- 2.Rd4#
- 2.Re5#
- 1...Se1
- 2.Qe3#
- 1...Se3+
- 2.Qxe3#
- 1...Sf4
- 2.Sf2#
- 2.Qe3#
- 1...Sxh4
- 2.Qe3#
- 1...Sf5
- 2.Sf2#
- 1...Se6
- 2.Rd4#
- 2.Re5#
- 2.Rd7#
- 1...Qxd5+
- Tries
- 1.Sf3?
- threat
- 2.Sg5#
- 2.Sf2#
- 1...Se3+
- 2.Qxe3#
- 1...Qxf3
- 2.Re5#
- 1...Qh5
- 2.Sf2#
- 2.Re5#
- 1...Qg6
- 2.Sf2#
- 2.Re5#
- 1...Qf4
- 2.Sf2#
- 2.Re5#
- 2.Qb1#
- 2.Qc2#
- 1...Qf5
- 2.Sf2#
- 2.Rd4#
- 2.Re5#
- 1...Qf6
- 2.Sf2#
- 2.Re5#
- 1...Qe7
- 2.Sf2#
- 2.Re5#
- 1...Rh5
- 2.Sf2#
- 1...Rg6
- 2.Sf2#
- 1...Se6
- 2.Sf2#
- 2.Re5#
- 1...Qxd5+!
- threat
- 1.Sf5?
- threat
- 2.Sf2#
- 2.Sg3#
- 1...Se3+
- 2.Qxe3#
- 1...Qxf5
- 2.Rd4#
- 2.Re5#
- 1...Sxf5
- 2.Sf2#
- 1...Qc7
- 2.Sf2#
- 2.Re5#
- 1...Rh3
- 2.Sf2#
- 2.Sd6#
- 1...Sh5
- 2.Sf2#
- 1...Qxd5+!
- threat
- 1.Qg5?
- threat
- 2.Qe5#
- 1...Qxd5+
- 2.Bxd5#
- 1...Se3+
- 2.Qxe3#
- 1...Qh5
- 2.Sf2#
- 2.Rd4#
- 2.Re5#
- 2.Rd6#
- 1...Qe6
- 2.Sf2#
- 1...Qe8
- 2.Sf2#
- 2.Rd4#
- 2.Re5#
- 1...Qf4
- 2.Rd4#
- 2.Re5#
- 2.Rd6#
- 1...Qf5
- 2.Rd4#
- 2.Re5#
- 1...Qf6
- 2.Rd4#
- 2.Re5#
- 2.Rd6#
- 1...Qc7
- 2.Sf2#
- 2.Rd4#
- 2.Re5#
- 1...Qe7
- 2.Sf2#
- 2.Rd4#
- 2.Re5#
- 1...Re6
- 2.Rd4#
- 2.Re5#
- 1...Sf5
- 2.Sf2#
- 1...Rh5!
- threat
- 1.Sf3?
- Keys
- 1.Kb3!
- threat
- 2.Qc4#
- 1...Qf3+
- 2.exf3#
- 1...c4+
- 2.Qxc4#
- 1...Se3
- 2.Qxe3#
- 1...Qf2
- 2.Sxf2#
- 2.Rd6#
- 1...Qf6
- 2.Rd6#
- 1...Sf5
- 2.Sf2#
- 1...Se6
- 2.Rd7#
- threat
- 1.Kb3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 5
- Sets
- Q(f);CHECK,OGATE,P_SPINQ(f),XR(F)::B(G),XQ(f)
- Q(f);N_GUARD::S(D)
- S(a);N_GUARD::QAR1(A)
- S(a);CHECK,N_GUARD::QAR1(A),XS(a)
- S(a);N_GUARD,XS(E)::QAR1(A)
- S(g);S_CUTQ(f)::S(D)
- Tries
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- S(a);CHECK,N_GUARD::QAR1(A),XS(a)
- Q(f);N_PINR(F),XS(E)::B(G)+R(F),DCHECK
- R(e);::S(D)
- Refutation
- Q(f);CHECK,P_SPINQ(f),XR(F)
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- S(a);CHECK,N_GUARD::QAR1(A),XS(a)
- S(g);XS(E)::S(D)
- S(g);::S(D)
- Refutation
- Q(f);CHECK,P_SPINQ(f),XR(F)
- Try
- Q(A);
- Threat
- QAR1(A)
- Vars
- Q(f);CHECK,OGATE,P_SPINQ(f),XR(F)::B(G),XQ(f)
- S(a);CHECK,N_GUARD::QAR1(A),XS(a)
- Q(f);N_GUARD::S(D)
- S(g);S_CUTQ(f)::S(D)
- Refutation
- R(e);
- Try
- Actual
- K(C);S_FLIGHT
- Threat
- QAR2(A)
- Vars
- Q(f);CHECK,N_PINR(F),OGATE::P(B),XQ(f)
- P(d);CHECK,N_PINR(F)::QAR2(A),XP(d)
- S(a);N_GUARD::QAR1(A),XS(a)
- Q(f);N_PINR(F)::B(G)+R(F)
- S(g);S_CUTQ(f)::S(D)
- S(g);N_PINR(F)::B(G)+R(F)
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).