MESON Chess Problem Database
Problem Display
PID: 77927 (1r2RB2/N1pPP1n1/3kqR2/bbp4p/1P3P2/nQ5B/K7/8 w - - 0 1)
Ellerman, Arnoldo
Westbury, Eric Ernest
Good Companions (January), 1919
#2
11 + 10
| 56 | The Problemist | 2010 |
SOLUTION
- SOUND
- Sets
- 1...Rd8
- 2.exd8Q#
- 2.exd8R#
- 1...Sc4
- 2.Qd3#
- 1...Sf5
- 2.Qxe6#
- 1...Sxe8
- 2.Qxe6#
- 1...c4
- 2.Qd1#
- 1...Rd8
- Tries
- 1.Rxe6+?
- 1...Sxe6
- 2.Qxe6#
- 1...Kxd7!
- 1...Sxe6
- 1.Rxb8?
- threat
- 2.e8Q#
- 2.e8B#
- 1...Kxd7
- 2.Rd8#
- 2.Qd5#
- 1...Bxb4
- 2.e8Q#
- 2.e8B#
- 1...Bxd7
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...cxb4
- 2.e8Q#
- 2.e8B#
- 1...Bc4
- 2.d8Q#
- 2.d8R#
- 1...Sc4
- 2.Qd3#
- 1...c4
- 2.Qd1#
- 1...Bb6
- 2.e8Q#
- 2.e8B#
- 1...Bf1
- 2.d8Q#
- 2.d8R#
- 2.e8Q#
- 2.e8B#
- 1...Be2
- 2.d8Q#
- 2.d8R#
- 2.e8Q#
- 2.e8B#
- 1...Bd3
- 2.d8Q#
- 2.d8R#
- 2.e8Q#
- 2.e8B#
- 1...Ba4
- 2.e8Q#
- 2.e8B#
- 1...Ba6
- 2.d8Q#
- 2.d8R#
- 2.e8Q#
- 2.e8B#
- 1...Bc6
- 2.e8Q#
- 2.e8B#
- 1...Sb1
- 2.e8Q#
- 2.e8B#
- 1...Sc2
- 2.e8Q#
- 2.e8B#
- 1...Sf5
- 2.Qxe6#
- 1...Se8
- 2.Qxe6#
- 1...h4
- 2.e8Q#
- 2.e8B#
- 1...c6!
- threat
- 1.Rd8?
- threat
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Rxd8
- 2.exd8Q#
- 2.exd8R#
- 2.e8Q#
- 2.e8B#
- 1...Bxb4
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Bxd7
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...cxb4
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Sc4
- 2.Qd3#
- 1...c4
- 2.Qd1#
- 1...Rb6
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Rb7
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Ra8
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Rc8
- 2.dxc8S#
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Bb6
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Bf1
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Be2
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Bd3
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Ba4
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Ba6
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Bc6
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Sb1
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Sc2
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Se8
- 2.Rxe6#
- 2.Qxe6#
- 2.dxe8S#
- 1...h4
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Bc4!
- threat
- 1.d8Q+?
- 1...Rxd8
- 2.exd8Q#
- 2.exd8R#
- 1...Bd7!
- 1...Rxd8
- 1.d8R+?
- 1...Rxd8
- 2.exd8Q#
- 2.exd8R#
- 1...Bd7!
- 1...Rxd8
- 1.Rxe6+?
- Keys
- 1.Rc8!
- threat
- 2.e8Q#
- 2.e8B#
- 1...Kxd7
- 2.Qd5#
- 1...Rxc8
- 2.e8Q#
- 2.e8B#
- 1...Bxb4
- 2.e8Q#
- 2.e8B#
- 1...Bxd7
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...cxb4
- 2.e8Q#
- 2.e8B#
- 1...Bc4
- 2.d8Q#
- 2.d8R#
- 1...Sc4
- 2.Qd3#
- 1...c4
- 2.Qd1#
- 1...Rb6
- 2.e8Q#
- 2.e8B#
- 1...Rb7
- 2.e8Q#
- 2.e8B#
- 1...Ra8
- 2.e8Q#
- 2.e8B#
- 1...Bb6
- 2.e8Q#
- 2.e8B#
- 1...Bf1
- 2.d8Q#
- 2.d8R#
- 2.e8Q#
- 2.e8B#
- 1...Be2
- 2.d8Q#
- 2.d8R#
- 2.e8Q#
- 2.e8B#
- 1...Bd3
- 2.d8Q#
- 2.d8R#
- 2.e8Q#
- 2.e8B#
- 1...Ba4
- 2.e8Q#
- 2.e8B#
- 1...Ba6
- 2.d8Q#
- 2.d8R#
- 2.e8Q#
- 2.e8B#
- 1...Bc6
- 2.e8Q#
- 2.e8B#
- 1...Sb1
- 2.e8Q#
- 2.e8B#
- 1...Sc2
- 2.e8Q#
- 2.e8B#
- 1...Sf5
- 2.Qxe6#
- 1...Se8
- 2.Qxe6#
- 1...h4
- 2.e8Q#
- 2.e8B#
- 1...c6
- 2.e8Q#
- 2.e8B#
- threat
- 1.Rc8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(j);OGATE::PXR(j)=Q
- S(a);N_PINQ(B)::QAR(B)
- S(i);N_GUARD::QAR1(B),XQ(g)
- S(i);N_GUARD,XR(J)::QAR1(B),XQ(g)
- P(d);N_PINQ(B)::QAR(B)
- Tries
- Try
- R(F);CHECK,N_SPINQ(B),XQ(g)
- Vars
- S(i);OGATE,XR(F)::QAR1(B),XS(i)
- Refutation
- K(f);P-FLIGHT,XP(H)
- Try
- R(J);XR(j)
- Threat
- P=Q
- Vars
- B(b);XP(D)::P=Q
- P(d);XP(D)::P=Q
- B(c);N_GUARD::P=Q
- S(a);N_PINQ(B)::QAR(B)
- P(d);N_PINQ(B)::QAR(B)
- B(b);::P=Q
- B(c);::P=Q
- S(a);::P=Q
- S(i);N_GUARD::QAR1(B),XQ(g)
- P(e);::P=Q
- Refutation
- P(h);
- Try
- R(J);
- Threat
- DUALS(4)
- Vars
- S(a);N_PINQ(B)::QAR(B)
- P(d);N_PINQ(B)::QAR(B)
- Refutation
- B(c);
- Try
- P(H);CHECK
- Vars
- R(j);OGATE,XQ(H)::PXR(j)=Q
- Refutation
- B(c);P_SPINB(c)
- Try
- P(H);CHECK
- Vars
- R(j);OGATE,XR(H)::PXR(j)=Q
- Refutation
- B(c);P_SPINB(c)
- Try
- Actual
- R(J);
- Threat
- P=Q
- Vars
- K(f);P-FLIGHT,XP(H)::QAR2(B)
- R(j);XR(J)::P=Q
- B(b);XP(D)::P=Q
- P(d);XP(D)::P=Q
- B(c);N_GUARD::P=Q
- S(a);N_PINQ(B)::QAR(B)
- P(d);N_PINQ(B)::QAR(B)
- R(j);::P=Q
- B(b);::P=Q
- B(c);::P=Q
- S(a);::P=Q
- S(i);N_GUARD::QAR1(B),XQ(g)
- P(e);::P=Q
- P(h);::P=Q
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).