MESON Chess Problem Database
Problem Display
PID: 194992 (8/4n3/4r3/Q7/2pkpB1N/3p4/R4N2/K7 w - - 0 1)
Opdenoordt, Joseph J
Tijdschrift vd KNSB, 1918
#2
6 + 6
| 6490 | yacpdb | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Re5
- 2.Qxe5#
- 1...Ra6
- 2.Qe5#
- 1...Rb6
- 2.Qe5#
- 1...Rc6
- 2.Qe5#
- 1...Rd6
- 2.Qe5#
- 1...Rf6
- 2.Qe5#
- 1...Rg6
- 2.Qe5#
- 1...Rh6
- 2.Qe5#
- 1...Sd5
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...Sc6
- 2.Sf5#
- 1...Sg6
- 2.Sf5#
- 1...Sc8
- 2.Sf5#
- 1...Sg8
- 2.Sf5#
- 1...d2
- 2.Rxd2#
- 1...c3
- 2.Ra4#
- 1...e3
- 2.Sf3#
- 1...Re5
- Tries
- 1.Kb1?
- 1...c3
- 2.Ra4#
- 1...Re5
- 2.Qxe5#
- 1...Ra6
- 2.Qe5#
- 1...Rc6
- 2.Qe5#
- 1...Rd6
- 2.Qe5#
- 1...Rf6
- 2.Qe5#
- 1...Rg6
- 2.Qe5#
- 1...Rh6
- 2.Qe5#
- 1...Sd5
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...Sc6
- 2.Sf5#
- 1...Sg6
- 2.Sf5#
- 1...Sc8
- 2.Sf5#
- 1...Sg8
- 2.Sf5#
- 1...d2
- 2.Rxd2#
- 1...e3
- 2.Sf3#
- 1...Rb6+!
- 1...c3
- 1.Sd1?
- threat
- 2.Be3#
- 1...d2
- 2.Rxd2#
- 1...c3
- 2.Ra4#
- 1...Sd5
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...e3!
- threat
- 1.Sh1?
- 1...d2
- 2.Rxd2#
- 1...c3
- 2.Ra4#
- 1...Re5
- 2.Qxe5#
- 1...Ra6
- 2.Qe5#
- 1...Rb6
- 2.Qe5#
- 1...Rc6
- 2.Qe5#
- 1...Rd6
- 2.Qe5#
- 1...Rf6
- 2.Qe5#
- 1...Rg6
- 2.Qe5#
- 1...Rh6
- 2.Qe5#
- 1...Sd5
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...Sc6
- 2.Sf5#
- 1...Sg6
- 2.Sf5#
- 1...Sc8
- 2.Sf5#
- 1...Sg8
- 2.Sf5#
- 1...e3!
- 1...d2
- 1.Sh3?
- 1...d2
- 2.Rxd2#
- 1...c3
- 2.Ra4#
- 1...Re5
- 2.Qxe5#
- 1...Ra6
- 2.Qe5#
- 1...Rb6
- 2.Qe5#
- 1...Rc6
- 2.Qe5#
- 1...Rd6
- 2.Qe5#
- 1...Rf6
- 2.Qe5#
- 1...Rg6
- 2.Qe5#
- 1...Rh6
- 2.Qe5#
- 1...Sd5
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...Sc6
- 2.Sf5#
- 1...Sg6
- 2.Sf5#
- 1...Sc8
- 2.Sf5#
- 1...Sg8
- 2.Sf5#
- 1...e3!
- 1...d2
- 1.Sg4?
- threat
- 2.Be3#
- 1...d2
- 2.Rxd2#
- 1...c3
- 2.Ra4#
- 1...Sd5
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...e3!
- threat
- 1.Be5+?
- 1...Ke3
- 2.Sd1#
- 2.Sg4#
- 2.Qe1#
- 2.Qd2#
- 2.Qc5#
- 1...Rxe5!
- 1...Ke3
- 1.Rb2?
- 1...c3
- 2.Rb4#
- 1...Re5
- 2.Qxe5#
- 1...Rb6
- 2.Qe5#
- 1...Rc6
- 2.Qe5#
- 1...Rd6
- 2.Qe5#
- 1...Rf6
- 2.Qe5#
- 1...Rg6
- 2.Qe5#
- 1...Rh6
- 2.Qe5#
- 1...Sd5
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...Sc6
- 2.Sf5#
- 1...Sg6
- 2.Sf5#
- 1...Sc8
- 2.Sf5#
- 1...Sg8
- 2.Sf5#
- 1...d2
- 2.Rxd2#
- 1...e3
- 2.Sf3#
- 1...Ra6!
- 1...c3
- 1.Ra4?
- 1...Re5
- 2.Qxe5#
- 1...Ra6
- 2.Qe5#
- 1...Rb6
- 2.Qe5#
- 1...Rc6
- 2.Qe5#
- 1...Rd6
- 2.Qe5#
- 1...Rf6
- 2.Qe5#
- 1...Rg6
- 2.Qe5#
- 1...Rh6
- 2.Qe5#
- 1...Sd5
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...Sc6
- 2.Sf5#
- 1...Sg6
- 2.Sf5#
- 1...Sc8
- 2.Sf5#
- 1...Sg8
- 2.Sf5#
- 1...e3
- 2.Sf3#
- 1...d2!
- 1...Re5
- 1.Qb6+?
- 1...Kc3
- 2.Sd1#
- 2.Bd2#
- 2.Qb2#
- 1...Kd5
- 2.Ra5#
- 1...Rxb6!
- 1...Kc3
- 1.Kb1?
- Keys
- 1.Ra3!
- 1...c3
- 2.Ra4#
- 1...Re5
- 2.Qxe5#
- 1...Ra6
- 2.Qe5#
- 1...Rb6
- 2.Qe5#
- 1...Rc6
- 2.Qe5#
- 1...Rd6
- 2.Qe5#
- 1...Rf6
- 2.Qe5#
- 1...Rg6
- 2.Qe5#
- 1...Rh6
- 2.Qe5#
- 1...Sd5
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...Sc6
- 2.Sf5#
- 1...Sg6
- 2.Sf5#
- 1...Sc8
- 2.Sf5#
- 1...Sg8
- 2.Sf5#
- 1...d2
- 2.Be3#
- 1...e3
- 2.Sf3#
- 1...c3
- 1.Ra3!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(e);N_GUARD::QAB1(F),XR(e)
- R(e);N_GUARD::QAB1(F)
- S(f);N_GUARD::S(E)
- S(f);N_GUARD::S(E),XS(f)
- P(a);OGATEB::R(B),XP(a)
- P(b);OGATEB::R(B)
- P(d);N_GUARD::S(E)
- Tries
- Try
- K(A);P-FLIGHT
- Vars
- P(b);OGATEB::R(B)
- R(e);N_GUARD::QAB1(F),XR(e)
- R(e);N_GUARD::QAB1(F)
- S(f);N_GUARD::S(E)
- S(f);N_GUARD::S(E),XS(f)
- P(a);OGATEB::R(B),XP(a)
- P(d);N_GUARD::S(E)
- Refutation
- R(e);CHECK
- Try
- S(C);
- Threat
- B(D)
- Vars
- P(a);OGATEB::R(B),XP(a)
- P(b);OGATEB::R(B)
- S(f);N_GUARD::S(E)
- S(f);N_GUARD::S(E),XS(f)
- Refutation
- P(d);
- Try
- S(C);
- Vars
- P(a);OGATEB::R(B),XP(a)
- P(b);OGATEB::R(B)
- R(e);N_GUARD::QAB1(F),XR(e)
- R(e);N_GUARD::QAB1(F)
- S(f);N_GUARD::S(E)
- S(f);N_GUARD::S(E),XS(f)
- Refutation
- P(d);
- Try
- S(C);
- Vars
- P(a);OGATEB::R(B),XP(a)
- P(b);OGATEB::R(B)
- R(e);N_GUARD::QAB1(F),XR(e)
- R(e);N_GUARD::QAB1(F)
- S(f);N_GUARD::S(E)
- S(f);N_GUARD::S(E),XS(f)
- Refutation
- P(d);
- Try
- S(C);
- Threat
- B(D)
- Vars
- P(a);OGATEB::R(B),XP(a)
- P(b);OGATEB::R(B)
- S(f);N_GUARD::S(E)
- S(f);N_GUARD::S(E),XS(f)
- Refutation
- P(d);
- Try
- B(D);CHECK
- Refutation
- R(e);XB(D)
- Try
- R(B);
- Vars
- P(b);OGATEB,SBLOCK::R(B)
- R(e);N_GUARD::QAB1(F),XR(e)
- R(e);N_GUARD::QAB1(F)
- S(f);N_GUARD::S(E)
- S(f);N_GUARD::S(E),XS(f)
- P(a);OGATEB::R(B),XP(a)
- P(d);N_GUARD::S(E)
- Refutation
- R(e);P_PINQ(F)
- Try
- R(B);P_PINP(b)
- Vars
- R(e);N_GUARD::QAB1(F),XR(e)
- R(e);N_GUARD::QAB1(F)
- S(f);N_GUARD::S(E)
- S(f);N_GUARD::S(E),XS(f)
- P(d);N_GUARD::S(E)
- Refutation
- P(a);
- Try
- Q(F);CHECK
- Vars
- K(c);P-FLIGHT::R(B)
- Refutation
- R(e);XQ(F)
- Try
- Actual
- R(B);
- Vars
- P(b);OGATEB::R(B)
- R(e);N_GUARD::QAB1(F),XR(e)
- R(e);N_GUARD::QAB1(F)
- S(f);N_GUARD::S(E)
- S(f);N_GUARD::S(E),XS(f)
- P(a);::B(D)
- P(d);N_GUARD::S(E)
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).