MESON Chess Problem Database
Problem Display
PID: 9572 (7K/8/1p1Nr2p/1P5Q/2p5/2B1k2N/2Pp4/3B2n1 w - - 0 1)
van Eelde, Antonie Clarus Johannes
Western Daily Mercury, 1905
#2
8 + 7
| 49 | Skakbladet | 1905 |
| 15 | British Chess Magazine | 1909 |
| 3360 | Simple Two-move Themes | 1924 |
SOLUTION
- SOUND
- Sets
- 1...Re4
- 2.Sf5#
- 1...Re5
- 2.Qxe5#
- 1...Rxd6
- 2.Qe5#
- 1...Rf6
- 2.Qe5#
- 1...Rg6
- 2.Qe5#
- 1...Re7
- 2.Qxh6#
- 1...Re8+
- 2.Qxe8#
- 1...Se2
- 2.Qxe2#
- 1...Sf3
- 2.Qxf3#
- 1...Sxh3
- 2.Qf3#
- 1...Re4
- Tries
- 1.Kh7?
- 1...Rxd6
- 2.Qe5#
- 1...Sxh3
- 2.Qf3#
- 1...Re4
- 2.Sf5#
- 1...Re5
- 2.Qxe5#
- 1...Rf6
- 2.Qe5#
- 1...Rg6
- 2.Qe5#
- 1...Re8
- 2.Qxe8#
- 2.Qxh6#
- 1...Se2
- 2.Qxe2#
- 1...Sf3
- 2.Qxf3#
- 1...Re7+!
- 1...Rxd6
- 1.Kg8?
- 1...Re8+
- 2.Qxe8#
- 1...Rxd6
- 2.Qe5#
- 1...Sxh3
- 2.Qf3#
- 1...Re4
- 2.Sf5#
- 1...Re5
- 2.Qxe5#
- 1...Rf6
- 2.Qe5#
- 1...Re7
- 2.Qxh6#
- 1...Se2
- 2.Qxe2#
- 1...Sf3
- 2.Qxf3#
- 1...Rg6+!
- 1...Re8+
- 1.Ba1?
- 1...Re8+
- 2.Qxe8#
- 1...Rxd6
- 2.Qe5#
- 1...Sxh3
- 2.Qf3#
- 1...Re4
- 2.Sf5#
- 1...Re5
- 2.Qxe5#
- 1...Rf6
- 2.Qe5#
- 1...Rg6
- 2.Qe5#
- 1...Re7
- 2.Qxh6#
- 1...Se2
- 2.Qxe2#
- 1...Sf3
- 2.Qxf3#
- 1...c3!
- 1...Re8+
- 1.Bb2?
- 1...Re8+
- 2.Qxe8#
- 1...Rxd6
- 2.Qe5#
- 1...Sxh3
- 2.Qf3#
- 1...Re4
- 2.Sf5#
- 1...Re5
- 2.Qxe5#
- 1...Rf6
- 2.Qe5#
- 1...Rg6
- 2.Qe5#
- 1...Re7
- 2.Qxh6#
- 1...Se2
- 2.Qxe2#
- 1...Sf3
- 2.Qxf3#
- 1...c3!
- 1...Re8+
- 1.Bg7?
- 1...Re8+
- 2.Qxe8#
- 1...Rxd6
- 2.Qe5#
- 1...Sxh3
- 2.Qf3#
- 1...Re5
- 2.Qxe5#
- 1...Rf6
- 2.Qe5#
- 1...Re4
- 2.Sf5#
- 1...Rg6
- 2.Qe5#
- 1...Re7
- 2.Qxh6#
- 1...Se2
- 2.Qxe2#
- 1...Sf3
- 2.Qxf3#
- 1...c3!
- 1...Re8+
- 1.Qg4?
- threat
- 2.Sxc4#
- 2.Sf5#
- 2.Bd4#
- 2.Qxe6#
- 2.Qxg1#
- 2.Qd4#
- 2.Qf4#
- 1...Rxd6
- 2.Qf4#
- 1...Sxh3
- 2.Bd4#
- 2.Qf3#
- 2.Qg3#
- 2.Qd4#
- 1...Re4
- 2.Sf5#
- 2.Qxg1#
- 2.Qxe4#
- 1...Re5
- 2.Sxc4#
- 2.Bd4#
- 2.Qxg1#
- 2.Qd4#
- 2.Qf4#
- 1...Rf6
- 2.Sxc4#
- 2.Bd4#
- 2.Qd4#
- 2.Qe4#
- 1...Rg6
- 2.Sxc4#
- 2.Sf5#
- 2.Bd4#
- 2.Qd4#
- 2.Qe4#
- 2.Qf4#
- 1...Re7
- 2.Sxc4#
- 2.Sf5#
- 2.Bd4#
- 2.Qxg1#
- 2.Qd4#
- 2.Qf4#
- 1...Se2
- 2.Sxc4#
- 2.Sf5#
- 2.Qxe2#
- 1...Sf3
- 2.Sxc4#
- 2.Sf5#
- 2.Qxf3#
- 2.Qf4#
- 1...Re8+!
- threat
- 1.Qf7?
- threat
- 2.Qxe6#
- 2.Qf2#
- 2.Qf4#
- 1...Re8+
- 2.Qxe8#
- 1...Rxd6
- 2.Qf4#
- 1...Sxh3
- 2.Qf3#
- 1...Re4
- 2.Sf5#
- 2.Qf2#
- 1...Re5
- 2.Qf2#
- 2.Qf4#
- 1...Rg6
- 2.Qf2#
- 2.Qf4#
- 1...Re7
- 2.Qf2#
- 2.Qf4#
- 2.Qxe7#
- 1...Se2
- 2.Qf2#
- 1...Sf3
- 2.Qxf3#
- 2.Qf4#
- 1...Rf6!
- threat
- 1.Qh4?
- threat
- 2.Sxc4#
- 2.Sf5#
- 2.Bd4#
- 2.Qf2#
- 2.Qd4#
- 2.Qf4#
- 1...Rxd6
- 2.Qf4#
- 1...Sxh3
- 2.Sxc4#
- 2.Sf5#
- 2.Bd4#
- 2.Qg3#
- 2.Qd4#
- 1...Se2
- 2.Qf2#
- 1...Re4
- 2.Sf5#
- 2.Qf2#
- 2.Qxe4#
- 1...Re5
- 2.Sxc4#
- 2.Bd4#
- 2.Qf2#
- 2.Qd4#
- 2.Qf4#
- 1...Rf6
- 2.Sxc4#
- 2.Bd4#
- 2.Qd4#
- 2.Qe4#
- 1...Sf3
- 2.Sxc4#
- 2.Sf5#
- 2.Qf2#
- 2.Qf4#
- 1...Re8+!
- threat
- 1.Qd5?
- threat
- 2.Sxc4#
- 2.Sf5#
- 2.Bxd2#
- 2.Bd4#
- 2.Qxe6#
- 2.Qxd2#
- 2.Qd4#
- 1...Rxd6
- 2.Bxd2#
- 2.Bd4#
- 2.Qe5#
- 1...Sxh3
- 2.Qf3#
- 2.Qxd2#
- 2.Qd4#
- 1...Re4
- 2.Sf5#
- 2.Bxd2#
- 2.Qxe4#
- 2.Qxd2#
- 1...Re5
- 2.Sxc4#
- 2.Bxd2#
- 2.Bd4#
- 2.Qxd2#
- 2.Qd4#
- 2.Qxe5#
- 1...Rf6
- 2.Sxc4#
- 2.Bxd2#
- 2.Bd4#
- 2.Qe4#
- 2.Qxd2#
- 2.Qd4#
- 2.Qe5#
- 1...Rg6
- 2.Sxc4#
- 2.Sf5#
- 2.Bxd2#
- 2.Bd4#
- 2.Qe4#
- 2.Qxd2#
- 2.Qd4#
- 2.Qe5#
- 1...Re7
- 2.Sxc4#
- 2.Sf5#
- 2.Bxd2#
- 2.Bd4#
- 2.Qxd2#
- 2.Qd4#
- 1...Se2
- 2.Sxc4#
- 2.Sf5#
- 2.Bxd2#
- 1...Sf3
- 2.Sxc4#
- 2.Sf5#
- 2.Qxf3#
- 1...Re8+!
- threat
- 1.Qf5?
- threat
- 2.Sxc4#
- 2.Qxe6#
- 2.Qf2#
- 2.Qf4#
- 1...Rxd6
- 2.Qf4#
- 2.Qe5#
- 1...Sxh3
- 2.Sxc4#
- 2.Qf3#
- 1...Re4
- 2.Qxe4#
- 2.Qf2#
- 1...Re5
- 2.Sxc4#
- 2.Qf2#
- 2.Qf4#
- 2.Qxe5#
- 1...Rf6
- 2.Sxc4#
- 2.Qe4#
- 2.Qe5#
- 1...Rg6
- 2.Sxc4#
- 2.Qe4#
- 2.Qf2#
- 2.Qf4#
- 2.Qe5#
- 1...Re7
- 2.Sxc4#
- 2.Qf2#
- 2.Qf4#
- 1...Se2
- 2.Sxc4#
- 2.Qf2#
- 1...Sf3
- 2.Sxc4#
- 2.Qxf3#
- 2.Qf4#
- 1...Re8+!
- threat
- 1.Kh7?
- Keys
- 1.Bf6!
- threat
- 2.Qxh6#
- 1...Re8+
- 2.Qxe8#
- 1...Rxd6
- 2.Qe5#
- 1...Rxf6
- 2.Qe5#
- 1...Sxh3
- 2.Qf3#
- 1...Re5
- 2.Qxe5#
- 1...Re4
- 2.Sf5#
- 1...Se2
- 2.Qxe2#
- 1...Sf3
- 2.Qxf3#
- threat
- 1.Bf6!
FEATURES
- Static
- TYPE = BLOCK_THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 2
- Sets
- R(f);SBLOCK::S(G)
- R(f);N_GUARD::QAR2(F),XR(f)
- R(f);N_GUARD,XS(G)::QAR2(F)
- R(f);N_GUARD::QAR2(F)
- R(f);N_GUARD::QAB(F),XP(g)
- R(f);CHECK,OGATEB::QAR(F),XR(f)
- S(a);N_GUARD::QAR1(F),XS(a)
- S(a);N_GUARD,XS(D)::QAR1(F)
- Tries
- Try
- K(H);P-FLIGHT
- Vars
- R(f);N_GUARD,XS(G)::QAR2(F)
- S(a);N_GUARD,XS(D)::QAR1(F)
- R(f);SBLOCK::S(G)
- R(f);N_GUARD::QAR2(F),XR(f)
- R(f);N_GUARD::QAR2(F)
- S(a);N_GUARD::QAR1(F),XS(a)
- Refutation
- R(f);CHECK
- Try
- K(H);P-FLIGHT
- Vars
- R(f);CHECK,OGATEB::QAR(F),XR(f)
- R(f);N_GUARD,XS(G)::QAR2(F)
- S(a);N_GUARD,XS(D)::QAR1(F)
- R(f);SBLOCK::S(G)
- R(f);N_GUARD::QAR2(F),XR(f)
- R(f);N_GUARD::QAR2(F)
- R(f);N_GUARD::QAB(F),XP(g)
- S(a);N_GUARD::QAR1(F),XS(a)
- Refutation
- R(f);CHECK
- Try
- B(C);
- Vars
- R(f);CHECK,OGATEB::QAR(F),XR(f)
- R(f);N_GUARD,XS(G)::QAR2(F)
- S(a);N_GUARD,XS(D)::QAR1(F)
- R(f);SBLOCK::S(G)
- R(f);N_GUARD::QAR2(F),XR(f)
- R(f);N_GUARD::QAR2(F)
- R(f);N_GUARD::QAB(F),XP(g)
- S(a);N_GUARD::QAR1(F),XS(a)
- Refutation
- P(d);
- Try
- B(C);
- Vars
- R(f);CHECK,OGATEB::QAR(F),XR(f)
- R(f);N_GUARD,XS(G)::QAR2(F)
- S(a);N_GUARD,XS(D)::QAR1(F)
- R(f);SBLOCK::S(G)
- R(f);N_GUARD::QAR2(F),XR(f)
- R(f);N_GUARD::QAR2(F)
- R(f);N_GUARD::QAB(F),XP(g)
- S(a);N_GUARD::QAR1(F),XS(a)
- Refutation
- P(d);
- Try
- B(C);
- Vars
- R(f);CHECK,OGATEB::QAR(F),XR(f)
- R(f);N_GUARD,XS(G)::QAR2(F)
- S(a);N_GUARD,XS(D)::QAR1(F)
- R(f);N_GUARD::QAR2(F),XR(f)
- R(f);N_GUARD::QAR2(F)
- R(f);SBLOCK::S(G)
- R(f);N_GUARD::QAB(F),XP(g)
- S(a);N_GUARD::QAR1(F),XS(a)
- Refutation
- P(d);
- Try
- Q(F);
- Threat
- DUALS(7)
- Vars
- R(f);XS(G)::QAB1(F)
- Refutation
- R(f);CHECK
- Try
- Q(F);
- Threat
- DUALS(3)
- Vars
- R(f);CHECK,OGATEB::QAR(F),XR(f)
- R(f);XS(G)::QAB1(F)
- S(a);N_GUARD,XS(D)::QAR1(F)
- S(a);::QAB1(F)
- Refutation
- R(f);
- Try
- Q(F);
- Threat
- DUALS(6)
- Vars
- R(f);XS(G)::QAB1(F)
- S(a);::QAB1(F)
- Refutation
- R(f);CHECK
- Try
- Q(F);
- Threat
- DUALS(7)
- Refutation
- R(f);CHECK
- Try
- Q(F);
- Threat
- DUALS(4)
- Refutation
- R(f);CHECK
- Try
- Actual
- B(C);
- Threat
- QAB(F),XP(g)
- Vars
- R(f);CHECK,OGATEB::QAR(F),XR(f)
- R(f);N_GUARD,XS(G)::QAR2(F)
- R(f);N_GUARD,XB(C)::QAR2(F)
- S(a);N_GUARD,XS(D)::QAR1(F)
- R(f);N_GUARD::QAR2(F),XR(f)
- R(f);SBLOCK::S(G)
- S(a);N_GUARD::QAR1(F),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).