MESON Chess Problem Database
Problem Display
PID: 187923 (2n1R3/4p2p/6pQ/KB6/4kr2/4N3/4R1P1/B7 w - - 0 1)
van Dijk, Johannes
Sydney Morning Herald, 1910
#2
8 + 6
| 6490 | yacpdb | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Rh4
- 2.Qxh4#
- 1...Sb6
- 2.Rxe7#
- 1...Sd6
- 2.Rxe7#
- 1...Sa7
- 2.Rxe7#
- 1...g5
- 2.Qc6#
- 2.Qe6#
- 1...e5
- 2.Rxe5#
- 1...e6
- 2.Rxe6#
- 1...Rh4
- Tries
- 1.Sc4+?
- 1...Kd3
- 2.Se5#
- 1...Kd5
- 2.Re5#
- 1...Kf5!
- 1...Kd3
- 1.Sd5+?
- 1...Kf5
- 2.Qxf4#
- 1...Kxd5!
- 1...Kf5
- 1.Sf5+?
- 1...Kd5
- 2.Re5#
- 1...Kxf5!
- 1...Kd5
- 1.Rd2?
- 1...Kxe3
- 2.Re2#
- 1...Rf1
- 2.Bd3#
- 2.Bc6#
- 1...Rf2
- 2.Bd3#
- 2.Bc6#
- 1...Rf3
- 2.Bd3#
- 2.Bc6#
- 1...Rg4
- 2.Bd3#
- 2.Bc6#
- 1...Rh4
- 2.Bd3#
- 2.Bc6#
- 1...Rf6
- 2.Bd3#
- 1...Rf7
- 2.Bd3#
- 2.Bc6#
- 1...Rf8
- 2.Bd3#
- 2.Bc6#
- 1...Sb6
- 2.Rxe7#
- 1...Sd6
- 2.Rxe7#
- 1...Sa7
- 2.Rxe7#
- 1...g5
- 2.Qe6#
- 1...e5
- 2.Rxe5#
- 1...e6
- 2.Rxe6#
- 1...Rf5!
- 1...Kxe3
- 1.Rd8?
- threat
- 2.Bd3#
- 2.Bc6#
- 1...Rf5
- 2.Sd1#
- 2.Sf1#
- 2.Sc2#
- 2.Sc4#
- 2.Sg4#
- 2.Sd5#
- 1...Rf6
- 2.Bd3#
- 1...Sb6
- 2.Bd3#
- 1...Sa7
- 2.Bd3#
- 1...Sd6!
- threat
- 1.Qg5?
- threat
- 2.Sd1#
- 2.Sf1#
- 2.Sc2#
- 2.Sg4#
- 2.Sd5#
- 2.Qd5#
- 2.Qe5#
- 1...Rf1
- 2.Sd1#
- 2.Sxf1#
- 2.Sc2#
- 2.Sg4#
- 2.Sd5#
- 2.Qe5#
- 1...Rf2
- 2.Qe5#
- 1...Rf3
- 2.Qe5#
- 1...Rg4
- 2.Sd1#
- 2.Sf1#
- 2.Sc2#
- 2.Sxg4#
- 2.Sd5#
- 2.Qxg4#
- 2.Qe5#
- 1...Rh4
- 2.Sd1#
- 2.Sf1#
- 2.Sc2#
- 2.Sg4#
- 2.Sd5#
- 2.Qxh4#
- 2.Qe5#
- 1...Rf6
- 2.Sd1#
- 2.Sf1#
- 2.Sc2#
- 2.Sg4#
- 2.Sd5#
- 2.Qe5#
- 1...Rf7
- 2.Sd1#
- 2.Sf1#
- 2.Sc2#
- 2.Sg4#
- 2.Sd5#
- 2.Qe5#
- 1...Rf8
- 2.Sd1#
- 2.Sf1#
- 2.Sc2#
- 2.Sg4#
- 2.Sd5#
- 2.Qe5#
- 1...Sb6
- 2.Sd1#
- 2.Sf1#
- 2.Sc2#
- 2.Sg4#
- 2.Sd5#
- 2.Rxe7#
- 2.Qxe7#
- 2.Qe5#
- 1...e5
- 2.Rxe5#
- 2.Qxe5#
- 1...Rf5!
- threat
- 1.Qg7?
- threat
- 2.Qd4#
- 2.Qe5#
- 1...Rf5
- 2.Qd4#
- 1...e5
- 2.Rxe5#
- 2.Qxe5#
- 2.Qb7#
- 1...Rf6!
- threat
- 1.Qxg6+?
- 1...Rf5
- 2.Qxf5#
- 1...hxg6!
- 1...Rf5
- 1.Sc4+?
- Keys
- 1.Ra2!
- 1...Kxe3
- 2.Re2#
- 1...Rf1
- 2.Ra4#
- 1...Rf2
- 2.Ra4#
- 1...Rf3
- 2.Ra4#
- 1...Rg4
- 2.Ra4#
- 1...Rh4
- 2.Ra4#
- 1...Rf5
- 2.Ra4#
- 1...Rf6
- 2.Ra4#
- 1...Rf7
- 2.Ra4#
- 1...Rf8
- 2.Ra4#
- 1...Sb6
- 2.Rxe7#
- 1...Sd6
- 2.Rxe7#
- 1...Sa7
- 2.Rxe7#
- 1...g5
- 2.Qe6#
- 1...e5
- 2.Rxe5#
- 1...e6
- 2.Rxe6#
- 1...Kxe3
- 1.Ra2!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 10
- REMOVED MATES = 0
- Sets
- R(b);OGATEB::QAR(G),XR(b)
- S(f);N_GUARD::R(H),XP(d)
- P(d);OGATE::R1(H),XP(d)
- P(d);OGATE::R(H),XP(d)
- Tries
- Try
- S(D);CHECK
- Vars
- K(a);N_SPINP(d),S_FLIGHT::B(F)+S(D),DCHECK
- K(a);N_SPINP(d),OGATE,S_FLIGHT::R1(B)
- Refutation
- K(a);N_SPINP(d),S_FLIGHT
- Try
- S(D);CHECK
- Vars
- K(a);N_SPINP(d),S_FLIGHT::QAR1(G),XR(b)
- Refutation
- K(a);N_SPINP(d),S_FLIGHT,XS(D)
- Try
- S(D);CHECK
- Vars
- K(a);N_SPINP(d),OGATE,S_FLIGHT::R1(B)
- Refutation
- K(a);N_SPINP(d),S_FLIGHT,XS(D)
- Try
- R(B);
- Vars
- K(a);OGATEB,P-FLIGHT,P_SPINR(b),XS(D)::R1(B)
- R(b);::B(F)
- S(f);N_GUARD::R(H),XP(d)
- P(c);OGATE::QAR2(G)
- P(d);OGATE::R1(H),XP(d)
- P(d);OGATE::R(H),XP(d)
- Refutation
- R(b);P_PINB(F)
- Try
- R(H);N_PINP(d)
- Threat
- DUALS(2)
- Vars
- R(b);::B(F)
- S(f);::B(F)
- Refutation
- S(f);
- Try
- Q(G);
- Threat
- DUALS(7)
- Vars
- R(b);::QAR1(G)
- Refutation
- R(b);P_PINB(F)
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- R(b);P_PINB(F)::QAR1(G)
- Refutation
- R(b);
- Try
- Q(G);CHECK,XP(c)
- Vars
- R(b);N_GUARD,P_PINB(F),P_SPINR(b)::QAB1(G),XR(b)
- Refutation
- P(e);XQ(G)
- Try
- Actual
- R(B);
- Vars
- K(a);OGATEB,P-FLIGHT,P_SPINR(b),XS(D)::R1(B)
- R(b);::R(B)
- R(b);P_PINB(F)::R(B)
- S(f);N_GUARD::R(H),XP(d)
- P(c);OGATE::QAR2(G)
- P(d);OGATE::R1(H),XP(d)
- P(d);OGATE::R(H),XP(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).