MESON Chess Problem Database
Problem Display
PID: 214731 (4r3/1b1B1np1/4n1Np/1PPk3K/1p6/1N1P2B1/8/Q5b1 w - - 0 1)
Dunnica, RF
Detroit Free Press, 1877
#2
9 + 9
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Re7
- 2.Sxe7#
- 1...Ra8
- 2.Se7#
- 1...Rb8
- 2.Se7#
- 1...Rc8
- 2.Se7#
- 1...Rd8
- 2.Se7#
- 1...Rf8
- 2.Se7#
- 1...Rg8
- 2.Se7#
- 1...Rh8
- 2.Se7#
- 1...Bf2
- 2.Qh1#
- 1...Bh2
- 2.Qh1#
- 1...Be3
- 2.Qh1#
- 1...Bd4
- 2.Qh1#
- 1...Bxc5
- 2.Qh1#
- 1...Ba6
- 2.Bc6#
- 1...Bc6
- 2.Bxc6#
- 1...Bc8
- 2.Bc6#
- 1...Sf4+
- 2.Sxf4#
- 1...Seg5
- 2.Sf4#
- 1...Sc7
- 2.Sf4#
- 1...Sed8
- 2.Sf4#
- 1...Sf8
- 2.Sf4#
- 1...Se5
- 2.Qxe5#
- 1...Sfg5
- 2.Qe5#
- 1...Sd6
- 2.Qe5#
- 1...Sfd8
- 2.Qe5#
- 1...Sh8
- 2.Qe5#
- 1...Re7
- Tries
- 1.Bf2?
- 1...Sf4+
- 2.Sxf4#
- 1...Bxf2
- 2.Qh1#
- 1...Sxc5
- 2.Qd4#
- 1...Re7
- 2.Sxe7#
- 1...Ra8
- 2.Se7#
- 1...Rb8
- 2.Se7#
- 1...Rc8
- 2.Se7#
- 1...Rd8
- 2.Se7#
- 1...Rf8
- 2.Se7#
- 1...Rg8
- 2.Se7#
- 1...Rh8
- 2.Se7#
- 1...Bh2
- 2.Qh1#
- 1...Ba6
- 2.Bc6#
- 1...Bc6
- 2.Bxc6#
- 1...Bc8
- 2.Bc6#
- 1...Sd4
- 2.Qxd4#
- 1...Seg5
- 2.Sf4#
- 2.Qd4#
- 1...Sc7
- 2.Sf4#
- 2.Qd4#
- 1...Sed8
- 2.Sf4#
- 2.Qd4#
- 1...Sf8
- 2.Sf4#
- 2.Qd4#
- 1...Se5
- 2.Qxe5#
- 1...Sfg5
- 2.Qe5#
- 1...Sd6
- 2.Qe5#
- 1...Sfd8
- 2.Qe5#
- 1...Sh8
- 2.Qe5#
- 1...Ba8!
- 1...Sf4+
- 1.Bc7?
- 1...Sf4+
- 2.Sxf4#
- 1...Bxc5
- 2.Qh1#
- 1...Sxc5
- 2.Sf4#
- 1...Sxc7
- 2.Sf4#
- 1...Re7
- 2.Sxe7#
- 1...Ra8
- 2.Se7#
- 1...Rb8
- 2.Se7#
- 1...Rc8
- 2.Se7#
- 1...Rd8
- 2.Se7#
- 1...Rf8
- 2.Se7#
- 1...Rg8
- 2.Se7#
- 1...Rh8
- 2.Se7#
- 1...Bf2
- 2.Qh1#
- 1...Bh2
- 2.Qh1#
- 1...Be3
- 2.Qh1#
- 1...Bd4
- 2.Qh1#
- 1...Ba6
- 2.Bc6#
- 1...Bc6
- 2.Bxc6#
- 1...Bc8
- 2.Bc6#
- 1...Sd4
- 2.Sf4#
- 1...Seg5
- 2.Sf4#
- 1...Sed8
- 2.Sf4#
- 1...Sf8
- 2.Sf4#
- 1...Se5
- 2.Qxe5#
- 1...Sfg5
- 2.Qe5#
- 1...Sd6
- 2.Qe5#
- 1...Sfd8
- 2.Qe5#
- 1...Sh8
- 2.Qe5#
- 1...Ba8!
- 1...Sf4+
- 1.Bxe6+?
- 1...Rxe6
- 2.Sf4#
- 1...Kxe6!
- 1...Rxe6
- 1.Qc3?
- threat
- 2.Qc4#
- 1...Sf4+
- 2.Sxf4#
- 1...Se5
- 2.Qxe5#
- 1...Sd6
- 2.Qe5#
- 1...bxc3!
- threat
- 1.Qf6?
- threat
- 2.Qf3#
- 1...Sf4+
- 2.Sxf4#
- 1...Sxc5
- 2.Sf4#
- 1...Sd4
- 2.Sf4#
- 1...Seg5
- 2.Sf4#
- 1...Sc7
- 2.Sf4#
- 1...Sed8
- 2.Sf4#
- 1...Sf8
- 2.Sf4#
- 1...Se5
- 2.Qxe5#
- 1...Sfg5
- 2.Qe5#
- 2.Qf5#
- 1...Sd6
- 2.Qe5#
- 1...gxf6!
- threat
- 1.Qe1?
- threat
- 2.Qe4#
- 1...Sf4+
- 2.Sxf4#
- 1...Be3
- 2.Qh1#
- 1...Sd4
- 2.Sf4#
- 1...Seg5
- 2.Sf4#
- 1...Sc7
- 2.Sf4#
- 1...Sed8
- 2.Sf4#
- 1...Sf8
- 2.Sf4#
- 1...Sfg5
- 2.Qe5#
- 1...Sd6
- 2.Qe5#
- 1...Sxc5!
- threat
- 1.Bf2?
- Keys
- 1.Bb8!
- 1...Sf4+
- 2.Sxf4#
- 1...Rxb8
- 2.Se7#
- 1...Bxc5
- 2.Qh1#
- 1...Sxc5
- 2.Sf4#
- 1...Ba8
- 2.Qxa8#
- 1...Re7
- 2.Sxe7#
- 1...Rc8
- 2.Se7#
- 1...Rd8
- 2.Se7#
- 1...Rf8
- 2.Se7#
- 1...Rg8
- 2.Se7#
- 1...Rh8
- 2.Se7#
- 1...Bf2
- 2.Qh1#
- 1...Bh2
- 2.Qh1#
- 1...Be3
- 2.Qh1#
- 1...Bd4
- 2.Qh1#
- 1...Ba6
- 2.Bc6#
- 1...Bc6
- 2.Bxc6#
- 1...Bc8
- 2.Bc6#
- 1...Sd4
- 2.Sf4#
- 1...Seg5
- 2.Sf4#
- 1...Sc7
- 2.Sf4#
- 1...Sed8
- 2.Sf4#
- 1...Sf8
- 2.Sf4#
- 1...Se5
- 2.Qxe5#
- 1...Sfg5
- 2.Qe5#
- 1...Sd6
- 2.Qe5#
- 1...Sfd8
- 2.Qe5#
- 1...Sh8
- 2.Qe5#
- 1...Sf4+
- 1.Bb8!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 1
- Sets
- R(i);N_GUARD::S(H),XR(i)
- R(i);N_GUARD::S(H)
- B(a);OGATE::QAB(A)
- B(a);OGATE,XP(F)::QAB(A)
- B(f);N_GUARD::B(I)
- B(f);N_GUARD::B(I),XB(f)
- S(d);CHECK,N_GUARD::S(H),XS(d)
- S(d);N_GUARD::S(H)
- S(g);N_GUARD::QAR1(A),XS(g)
- S(g);N_GUARD::QAR1(A)
- Tries
- Try
- B(D);
- Vars
- S(d);CHECK,N_GUARD::S(H),XS(d)
- B(a);OGATE,XB(D)::QAB(A)
- S(d);N_GUARD,XP(F)::QAR1(A)
- R(i);N_GUARD::S(H),XR(i)
- R(i);N_GUARD::S(H)
- B(a);OGATE::QAB(A)
- B(f);N_GUARD::B(I)
- B(f);N_GUARD::B(I),XB(f)
- S(d);N_GUARD::QAR1(A),XS(d)
- S(g);N_GUARD::QAR1(A),XS(g)
- S(g);N_GUARD::QAR1(A)
- Refutation
- B(f);
- Try
- B(D);
- Vars
- S(d);CHECK,N_GUARD::S(H),XS(d)
- B(a);OGATE,XP(F)::QAB(A)
- S(d);N_GUARD,XP(F)::S(H)
- S(d);N_GUARD,XB(D)::S(H)
- R(i);N_GUARD::S(H),XR(i)
- R(i);N_GUARD::S(H)
- B(a);OGATE::QAB(A)
- B(f);N_GUARD::B(I)
- B(f);N_GUARD::B(I),XB(f)
- S(d);N_GUARD::S(H)
- S(g);N_GUARD::QAR1(A),XS(g)
- S(g);N_GUARD::QAR1(A)
- Refutation
- B(f);
- Try
- B(I);CHECK,XS(d)
- Vars
- R(i);XB(I)::S(H)
- Refutation
- K(c);S_FLIGHT,XB(I)
- Try
- Q(A);
- Threat
- QAB1(A)
- Vars
- S(d);CHECK,N_GUARD::S(H),XS(d)
- S(g);N_GUARD::QAR1(A),XS(g)
- S(g);N_GUARD::QAR1(A)
- Refutation
- P(b);XQ(A)
- Try
- Q(A);
- Threat
- QAB(A)
- Vars
- S(d);CHECK,N_GUARD::S(H),XS(d)
- S(d);N_GUARD,XP(F)::S(H)
- S(d);N_GUARD::S(H)
- S(g);N_GUARD::QAR1(A),XS(g)
- S(g);N_GUARD::QAR1(A)
- Refutation
- P(h);XQ(A)
- Try
- Q(A);
- Threat
- QAB1(A)
- Vars
- S(d);CHECK,N_GUARD::S(H),XS(d)
- B(a);OGATE::QAB(A)
- S(d);N_GUARD::S(H)
- S(g);N_GUARD::QAR1(A)
- Refutation
- S(d);XP(F)
- Try
- Actual
- B(D);
- Vars
- S(d);CHECK,N_GUARD::S(H),XS(d)
- R(i);N_GUARD,XB(D)::S(H)
- B(a);OGATE,XP(F)::QAB(A)
- S(d);N_GUARD,XP(F)::S(H)
- B(f);OGATEB::QAB(A),XB(f)
- R(i);N_GUARD::S(H),XR(i)
- R(i);N_GUARD::S(H)
- B(a);OGATE::QAB(A)
- B(f);N_GUARD::B(I)
- B(f);N_GUARD::B(I),XB(f)
- S(d);N_GUARD::S(H)
- S(g);N_GUARD::QAR1(A),XS(g)
- S(g);N_GUARD::QAR1(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).