MESON Chess Problem Database
Problem Display
PID: 223362 (3b2N1/6N1/2ppQ1p1/2p3kp/8/3n1Pp1/3R4/2B2K2 w - - 0 1)
Barrier, ?
St. Louis Globe Democrat, 1885
#2
7 + 9
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Kf4
- 2.Rxd3#
- 1...Ba5
- 2.Qf6#
- 1...Bb6
- 2.Qf6#
- 1...Bf6
- 2.Qxf6#
- 1...Bc7
- 2.Qf6#
- 1...Se1
- 2.Rh2#
- 2.Rd4#
- 1...Sb2
- 2.Rh2#
- 2.Rd4#
- 1...Sf2
- 2.Rd4#
- 1...Sb4
- 2.Rh2#
- 2.Rd4#
- 1...Se5
- 2.Rh2#
- 2.Rd4#
- 1...h4
- 2.Rxd3#
- 2.Qg4#
- 1...Kf4
- Tries
- 1.Rh2+?
- 1...Sxc1
- 2.Qe3#
- 1...Sf4!
- 1...Sxc1
- 1.Qh3?
- threat
- 2.Se6#
- 2.Rxd3#
- 2.Qxg3#
- 1...g2+
- 2.Rxg2#
- 1...Sxc1
- 2.Se6#
- 2.Qxg3#
- 1...Ba5
- 2.Se6#
- 2.Qxg3#
- 1...Se1
- 2.Se6#
- 2.Rd1#
- 2.Ra2#
- 2.Rb2#
- 2.Rc2#
- 2.Re2#
- 2.Rf2#
- 2.Rg2#
- 2.Rh2#
- 2.Rd3#
- 2.Rd4#
- 2.Rd5#
- 2.Rxd6#
- 2.Qxg3#
- 1...Sb2
- 2.Se6#
- 2.Rd1#
- 2.Rxb2#
- 2.Rc2#
- 2.Re2#
- 2.Rf2#
- 2.Rg2#
- 2.Rh2#
- 2.Rd3#
- 2.Rd4#
- 2.Rd5#
- 2.Rxd6#
- 2.Qxg3#
- 1...Sf2
- 2.Se6#
- 2.Rd1#
- 2.Ra2#
- 2.Rb2#
- 2.Rc2#
- 2.Re2#
- 2.Rxf2#
- 2.Rd3#
- 2.Rd4#
- 2.Rd5#
- 2.Rxd6#
- 1...Sb4
- 2.Se6#
- 2.Rd1#
- 2.Ra2#
- 2.Rb2#
- 2.Rc2#
- 2.Re2#
- 2.Rf2#
- 2.Rg2#
- 2.Rh2#
- 2.Rd3#
- 2.Rd4#
- 2.Rd5#
- 2.Rxd6#
- 2.Qxg3#
- 1...Sf4
- 2.Qxg3#
- 1...Se5
- 2.Se6#
- 2.Rd1#
- 2.Ra2#
- 2.Rb2#
- 2.Rc2#
- 2.Re2#
- 2.Rf2#
- 2.Rg2#
- 2.Rh2#
- 2.Rd3#
- 2.Rd4#
- 2.Rd5#
- 2.Rxd6#
- 1...h4
- 2.Rxd3#
- 2.Qg4#
- 1...Kf4!
- threat
- 1.Qe4?
- threat
- 2.Se6#
- 2.Rxd3#
- 1...g2+
- 2.Rxg2#
- 1...Sxc1
- 2.Se6#
- 1...Ba5
- 2.Se6#
- 1...Se1
- 2.Se6#
- 2.Rd1#
- 2.Ra2#
- 2.Rb2#
- 2.Rc2#
- 2.Re2#
- 2.Rf2#
- 2.Rg2#
- 2.Rh2#
- 2.Rd3#
- 2.Rd4#
- 2.Rd5#
- 2.Rxd6#
- 1...Sb2
- 2.Se6#
- 2.Rd1#
- 2.Rxb2#
- 2.Rc2#
- 2.Re2#
- 2.Rf2#
- 2.Rg2#
- 2.Rh2#
- 2.Rd3#
- 2.Rd4#
- 2.Rd5#
- 2.Rxd6#
- 1...Sf2
- 2.Se6#
- 2.Rd1#
- 2.Ra2#
- 2.Rb2#
- 2.Rc2#
- 2.Re2#
- 2.Rxf2#
- 2.Rd3#
- 2.Rd4#
- 2.Rd5#
- 2.Rxd6#
- 1...Sb4
- 2.Se6#
- 2.Rd1#
- 2.Ra2#
- 2.Rb2#
- 2.Rc2#
- 2.Re2#
- 2.Rf2#
- 2.Rg2#
- 2.Rh2#
- 2.Rd3#
- 2.Rd4#
- 2.Rd5#
- 2.Rxd6#
- 1...Se5
- 2.Se6#
- 2.Rd1#
- 2.Ra2#
- 2.Rb2#
- 2.Rc2#
- 2.Re2#
- 2.Rf2#
- 2.Rg2#
- 2.Rh2#
- 2.Rd3#
- 2.Rd4#
- 2.Rd5#
- 2.Rxd6#
- 1...h4
- 2.Rxd3#
- 2.Qg4#
- 1...Sf4!
- threat
- 1.Qe7+?
- 1...Kf4
- 2.Rxd3#
- 1...Bxe7!
- 1...Kf4
- 1.Rh2+?
- Keys
- 1.Qe1!
- threat
- 2.Qxg3#
- 1...g2+
- 2.Rxg2#
- 1...Kf4
- 2.Rxd3#
- 1...Kh4
- 2.Rh2#
- 1...Sxe1
- 2.Rh2#
- 2.Rd4#
- 1...Sf2
- 2.Rd4#
- 1...Se5
- 2.Rh2#
- 2.Rd4#
- 1...h4
- 2.Rxd3#
- threat
- 1.Qe1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 4
- Sets
- K(d);S_FLIGHT::B(A)+R(C),XS(a)
- B(i);N_GUARD::QAB1(E)
- B(i);N_GUARD::QAB1(E),XB(i)
- S(a);OGATE::B(A)+R(C)
- Tries
- Try
- R(C);CHECK
- Vars
- S(a);N_GUARD,XB(A)::QAB(E)
- Refutation
- S(a);P_SPINS(a)
- Try
- Q(E);
- Threat
- DUALS(3)
- Vars
- P(b);CHECK::B(A)+R(C),DCHECK,XP(b)
- S(a);::QAR2(E),XP(b)
- Refutation
- K(d);S_FLIGHT
- Try
- Q(E);
- Threat
- DUALS(2)
- Vars
- P(b);CHECK::B(A)+R(C),DCHECK,XP(b)
- S(a);XB(A)::S(F)
- B(i);::S(F)
- Refutation
- S(a);
- Try
- Q(E);CHECK
- Vars
- K(d);S_FLIGHT::B(A)+R(C),XS(a)
- Refutation
- B(i);XQ(E)
- Try
- Actual
- Q(E);
- Threat
- QAR2(E),XP(b)
- Vars
- P(b);CHECK::B(A)+R(C),DCHECK,XP(b)
- K(d);S_FLIGHT::B(A)+R(C),XS(a)
- K(d);P_SPINP(b),S_FLIGHT::R(C)
- S(a);OGATE::B(A)+R(C)
- P(e);SBLOCK::B(A)+R(C),XS(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).