MESON Chess Problem Database
Problem Display
PID: 261202 (8/5Qp1/4n1Pp/7R/3pRp2/1Npk1p2/P1p2P2/2K5 w - - 0 1)
List, Reto
Ott, Markus Johannes
Neue Zurcher Zeitung, 1978
#2
8 + 9
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Kc4
- 2.Rxd4#
- 1...Kxe4
- 2.Qf5#
- 1...Sc5
- 2.Sxc5#
- 1...Sg5
- 2.Sc5#
- 1...Sc7
- 2.Sc5#
- 1...Sd8
- 2.Sc5#
- 1...Sf8
- 2.Sc5#
- 1...Kc4
- Tries
- 1.Sd2?
- 1...Sc5
- 2.Qc4#
- 1...Sg5
- 2.Qc4#
- 1...Sc7
- 2.Qc4#
- 1...Sd8
- 2.Qc4#
- 1...Sf8
- 2.Qc4#
- 1...cxd2+!
- 1...Sc5
- 1.Re1?
- 1...Sc5
- 2.Sxc5#
- 1...Sg5
- 2.Sc5#
- 1...Sc7
- 2.Sc5#
- 1...Sd8
- 2.Sc5#
- 1...Sf8
- 2.Sc5#
- 1...Kc4!
- 1...Sc5
- 1.Ree5?
- 1...Sc5
- 2.Sxc5#
- 1...Sg5
- 2.Sc5#
- 1...Sc7
- 2.Sc5#
- 1...Sd8
- 2.Sc5#
- 1...Sf8
- 2.Sc5#
- 1...Kc4!
- 1...Sc5
- 1.Ra5?
- 1...Kc4
- 2.Rxd4#
- 1...Kxe4
- 2.Qf5#
- 1...Sc5
- 2.Sxc5#
- 1...Sg5
- 2.Sc5#
- 1...Sc7
- 2.Sc5#
- 1...Sd8
- 2.Sc5#
- 1...Sf8
- 2.Sc5#
- 1...h5!
- 1...Kc4
- 1.Rhe5?
- 1...Kc4
- 2.Rxd4#
- 1...Sc5
- 2.Sxc5#
- 2.Rxd4#
- 1...Sg5
- 2.Sc5#
- 2.Rxd4#
- 1...Sc7
- 2.Sc5#
- 2.Rxd4#
- 1...Sd8
- 2.Sc5#
- 2.Rxd4#
- 1...Sf8
- 2.Sc5#
- 2.Rxd4#
- 1...h5!
- 1...Kc4
- 1.Qg8?
- 1...Kc4
- 2.Rxd4#
- 1...Sc5
- 2.Sxc5#
- 1...Sg5
- 2.Sc5#
- 1...Sc7
- 2.Sc5#
- 1...Sd8
- 2.Sc5#
- 1...Sf8
- 2.Sc5#
- 1...Kxe4!
- 1...Kc4
- 1.Qd7?
- 1...Kc4
- 2.Qb5#
- 1...Sc5
- 2.Qxd4#
- 1...Sg5
- 2.Qxd4#
- 1...Sc7
- 2.Qxd4#
- 1...Sd8
- 2.Qxd4#
- 1...Sf8
- 2.Qxd4#
- 1...Kxe4!
- 1...Kc4
- 1.Qe7?
- 1...Kxe4
- 2.Sc5#
- 1...Sc5
- 2.Rxd4#
- 1...Sg5
- 2.Rxd4#
- 1...Sc7
- 2.Rxd4#
- 1...Sd8
- 2.Rxd4#
- 1...Sf8
- 2.Rxd4#
- 1...Kc4!
- 1...Kxe4
- 1.a3?
- 1...Kxe4
- 2.Qf5#
- 1...Sc5
- 2.Sxc5#
- 1...Sg5
- 2.Sc5#
- 1...Sc7
- 2.Sc5#
- 1...Sd8
- 2.Sc5#
- 1...Sf8
- 2.Sc5#
- 1...Kc4!
- 1...Kxe4
- 1.a4?
- 1...Kxe4
- 2.Qf5#
- 1...Sc5
- 2.Sxc5#
- 1...Sg5
- 2.Sc5#
- 1...Sc7
- 2.Sc5#
- 1...Sd8
- 2.Sc5#
- 1...Sf8
- 2.Sc5#
- 1...Kc4!
- 1...Kxe4
- 1.Sd2?
- Keys
- 1.Qe8!
- 1...Kc4
- 2.Qb5#
- 1...Kxe4
- 2.Sc5#
- 1...Sc5
- 2.Rxd4#
- 1...Sg5
- 2.Rxd4#
- 1...Sc7
- 2.Rxd4#
- 1...Sd8
- 2.Rxd4#
- 1...Sf8
- 2.Rxd4#
- 1...Kc4
- 1.Qe8!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 7
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- K(c);N_GUARD,P_SPINP(e),P_SPINS(g),S_FLIGHT::R1(E),XP(e)
- K(c);OGATEB,S_FLIGHT,XR(E)::QAB1(H)
- S(g);N_GUARD::S(D),XS(g)
- S(g);N_GUARD::S(D)
- Tries
- Try
- S(D);
- Vars
- S(g);OGATE::QAB1(H)
- Refutation
- P(b);CHECK,XS(D)
- Try
- R(E);
- Vars
- S(g);N_GUARD::S(D),XS(g)
- S(g);N_GUARD::S(D)
- Refutation
- K(c);P_SPINS(g),S_FLIGHT
- Try
- R(E);
- Vars
- S(g);N_GUARD::S(D),XS(g)
- S(g);N_GUARD::S(D)
- Refutation
- K(c);P_SPINS(g),S_FLIGHT
- Try
- R(F);
- Vars
- K(c);N_GUARD,P_SPINP(e),P_SPINS(g),S_FLIGHT::R1(E),XP(e)
- K(c);OGATEB,S_FLIGHT,XR(E)::QAB1(H)
- S(g);N_GUARD::S(D),XS(g)
- S(g);N_GUARD::S(D)
- Refutation
- P(h);
- Try
- R(F);
- Vars
- K(c);P_SPINP(e),P_SPINS(g),S_FLIGHT::R1(E),XP(e)
- Refutation
- P(h);
- Try
- Q(H);
- Vars
- K(c);N_GUARD,P_SPINP(e),P_SPINS(g),S_FLIGHT::R1(E),XP(e)
- S(g);N_GUARD::S(D),XS(g)
- S(g);N_GUARD::S(D)
- Refutation
- K(c);S_FLIGHT,XR(E)
- Try
- Q(H);P_PINP(e)
- Vars
- K(c);N_GUARD,S_FLIGHT::QAB1(H)
- S(g);N_GUARD::QAR1(H),XP(e)
- Refutation
- K(c);N_SPINP(e),S_FLIGHT,XR(E)
- Try
- Q(H);
- Vars
- K(c);N_GUARD,P_SPINS(g),S_FLIGHT,XR(E)::S(D)
- S(g);N_GUARD::R1(E),XP(e)
- Refutation
- K(c);P_SPINP(e),S_FLIGHT
- Try
- P(B);
- Vars
- K(c);OGATEB,S_FLIGHT,XR(E)::QAB1(H)
- S(g);N_GUARD::S(D),XS(g)
- S(g);N_GUARD::S(D)
- Refutation
- K(c);P_SPINP(e),P_SPINS(g),S_FLIGHT
- Try
- P(B);
- Vars
- K(c);OGATEB,S_FLIGHT,XR(E)::QAB1(H)
- S(g);N_GUARD::S(D),XS(g)
- S(g);N_GUARD::S(D)
- Refutation
- K(c);P_SPINP(e),P_SPINS(g),S_FLIGHT
- Try
- Actual
- Q(H);
- Vars
- K(c);N_GUARD,P_SPINP(e),S_FLIGHT::QAB1(H)
- K(c);N_GUARD,P_SPINS(g),S_FLIGHT,XR(E)::S(D)
- S(g);N_GUARD::R1(E),XP(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).