MESON Chess Problem Database
Problem Display
PID: 206297 (8/K2NN3/2Q2nr1/2nRp3/b1r1k1p1/4ppP1/7R/7B w - - 0 1)
Jordan, Gijsbertus
L'Alfiere di Re, 1925
#2
8 + 10
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Rb4
- 2.Sxc5#
- 1...Rd4
- 2.Sxc5#
- 1...Rg5
- 2.Sxf6#
- 1...Rg7
- 2.Sxf6#
- 1...Rg8
- 2.Sxf6#
- 1...Sd3
- 2.Qxc4#
- 1...Sa6
- 2.Qxc4#
- 1...Sb7
- 2.Qxc4#
- 1...Scxd7
- 2.Qxc4#
- 1...Sxd5
- 2.Qxd5#
- 1...Sh5
- 2.Qxg6#
- 1...Sfxd7
- 2.Qxg6#
- 1...Sh7
- 2.Qxg6#
- 1...Se8
- 2.Qxg6#
- 1...Sg8
- 2.Qxg6#
- 1...e2
- 2.Rxe2#
- 1...Rb4
- Tries
- 1.Rhd2?
- threat
- 2.R5d4#
- 2.Rxe5#
- 1...Bxc6
- 2.Rxe5#
- 1...Scxd7
- 2.R5d4#
- 2.Qxc4#
- 1...Sxd5
- 2.Qxd5#
- 2.Qxg6#
- 1...Sfxd7
- 2.R5d4#
- 2.Qxg6#
- 1...e2
- 2.Rxe2#
- 2.Rxe5#
- 1...Rd4
- 2.Sxc5#
- 2.R5xd4#
- 2.Rxe5#
- 1...Sd3
- 2.Qxc4#
- 1...exd2!
- threat
- 1.Rd1+?
- 1...Sd5
- 2.Qxd5#
- 2.Qxg6#
- 1...Bxc6!
- 1...Sd5
- 1.Rdd2+?
- 1...Sd5
- 2.Qxd5#
- 2.Qxg6#
- 1...Bxc6!
- 1...Sd5
- 1.Rd6+?
- 1...Sd5
- 2.Qxd5#
- 1...Bxc6!
- 1...Sd5
- 1.Qe6?
- threat
- 2.Qf5#
- 2.Qxe5#
- 1...Bxd7
- 2.Qxe5#
- 1...Scxd7
- 2.Qf5#
- 1...Sxd5
- 2.Qxd5#
- 1...Sfxd7
- 2.Qf5#
- 2.Qxg6#
- 1...Rd4
- 2.Sxc5#
- 2.Qf5#
- 1...e2
- 2.Rxe2#
- 2.Qxe5#
- 1...Rg5
- 2.Sxf6#
- 1...Sd3
- 2.Qf5#
- 1...Sxe6!
- threat
- 1.Qxf6?
- threat
- 2.Qxe5#
- 2.Qf5#
- 2.Qxg6#
- 1...Rxf6
- 2.Sxf6#
- 1...Bxd7
- 2.Qxe5#
- 1...Sxd7
- 2.Qf5#
- 2.Qxg6#
- 1...Rd4
- 2.Sxc5#
- 2.Qf5#
- 2.Qxg6#
- 1...e2
- 2.Rxe2#
- 2.Qxe5#
- 1...Rh6
- 2.Qxe5#
- 2.Qf5#
- 1...Rg7
- 2.Qxe5#
- 2.Qf5#
- 1...Rg8
- 2.Qxe5#
- 2.Qf5#
- 1...Sd3
- 2.Qf5#
- 2.Qxg6#
- 1...Rg5!
- threat
- 1.Rhd2?
- Keys
- 1.Rh5!
- threat
- 2.Rhxe5#
- 1...Scxd7
- 2.Qxc4#
- 1...Sxd5
- 2.Qxd5#
- 1...Sxh5
- 2.Qxg6#
- 1...Sfxd7
- 2.Qxg6#
- 1...Rd4
- 2.Sxc5#
- 1...Rg5
- 2.Sxf6#
- 1...Sd3
- 2.Qxc4#
- threat
- 1.Rh5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 9
- Sets
- R(d);N_GUARD::S(G),XS(g)
- R(j);N_GUARD::S(G),XS(i)
- S(g);OGATE::QAR2(E),XR(d)
- S(g);OGATE,XS(G)::QAR2(E),XR(d)
- S(i);OGATE,P_SPINS(i),XR(D)::QAB1(E),XS(i)
- S(i);OGATE::QAB(E),XR(j)
- S(i);OGATE,XS(G)::QAB(E),XR(j)
- P(a);OGATEB::R(B),XP(a)
- Tries
- Try
- R(B);
- Threat
- DUALS(2)
- Vars
- B(c);XQ(E)::R1(D),XP(h)
- S(g);OGATE::QAR2(E),XR(d)
- Refutation
- P(a);XR(B)
- Try
- R(D);CHECK
- Refutation
- B(c);XQ(E)
- Try
- R(D);CHECK
- Refutation
- B(c);XQ(E)
- Try
- R(D);CHECK
- Vars
- S(i);N_GUARD,P_SPINS(i)::QAB1(E),XS(i)
- Refutation
- B(c);XQ(E)
- Try
- Q(E);
- Threat
- DUALS(2)
- Vars
- B(c);XS(G)::QAR1(E),XP(h)
- S(g);XS(G)::QAB1(E)
- S(i);OGATE,XR(D)::QAB1(E),XS(i)
- R(j);N_GUARD::S(G),XS(i)
- S(g);::QAB1(E)
- Refutation
- S(g);XQ(E)
- Try
- Q(E);XS(i)
- Threat
- DUALS(3)
- Vars
- R(j);XQ(E)::S(G),XR(j)
- B(c);XS(G)::QAR1(E),XP(h)
- Refutation
- R(j);
- Try
- Actual
- R(B);
- Threat
- R1(B),XP(h)
- Vars
- S(g);OGATE,XS(G)::QAR2(E),XR(d)
- S(i);OGATE,P_SPINS(i),XR(D)::QAB1(E),XS(i)
- S(i);OGATE,XR(B)::QAB(E),XR(j)
- S(i);OGATE,XS(G)::QAB(E),XR(j)
- R(d);N_GUARD::S(G),XS(g)
- R(j);N_GUARD::S(G),XS(i)
- S(g);OGATE::QAR2(E),XR(d)
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).