MESON Chess Problem Database
Problem Display
PID: 103121 (8/1p1Q4/bP2N2N/1p2p1PK/1n2kp2/1n1p3R/3P4/8 w - - 0 1)
Macs, Valdemar
Latvian Sports Committee, 1955
#2
8 + 9
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Sa1
- 2.Sc5#
- 1...Sc1
- 2.Sc5#
- 1...Sxd2
- 2.Sc5#
- 1...Sd4
- 2.Sc5#
- 1...Sa5
- 2.Sc5#
- 1...Sc5
- 2.Sxc5#
- 1...Sa2
- 2.Qxd3#
- 1...Sc2
- 2.Qxd3#
- 1...Sd5
- 2.Qh7#
- 1...Sc6
- 2.Qxd3#
- 1...f3
- 2.Rh4#
- 1...Sa1
- Tries
- 1.Kg4?
- 1...Sxd2
- 2.Sc5#
- 1...Sa1
- 2.Sc5#
- 1...Sc1
- 2.Sc5#
- 1...Sd4
- 2.Sc5#
- 1...Sa5
- 2.Sc5#
- 1...Sc5
- 2.Sxc5#
- 1...Sa2
- 2.Qxd3#
- 1...Sc2
- 2.Qxd3#
- 1...Sd5
- 2.Qh7#
- 1...Sc6
- 2.Qxd3#
- 1...f3!
- 1...Sxd2
- 1.Kh4?
- 1...Sxd2
- 2.Sc5#
- 1...Sa1
- 2.Sc5#
- 1...Sc1
- 2.Sc5#
- 1...Sd4
- 2.Sc5#
- 1...Sa5
- 2.Sc5#
- 1...Sc5
- 2.Sxc5#
- 1...Sa2
- 2.Qxd3#
- 1...Sc2
- 2.Qxd3#
- 1...Sd5
- 2.Qh7#
- 1...Sc6
- 2.Qxd3#
- 1...f3!
- 1...Sxd2
- 1.Kg6?
- 1...Sxd2
- 2.Sc5#
- 1...f3
- 2.Rh4#
- 1...Sa1
- 2.Sc5#
- 1...Sc1
- 2.Sc5#
- 1...Sd4
- 2.Sc5#
- 1...Sa5
- 2.Sc5#
- 1...Sc5
- 2.Sxc5#
- 1...Sa2
- 2.Qxd3#
- 1...Sc2
- 2.Qxd3#
- 1...Sc6
- 2.Qxd3#
- 1...Sd5!
- 1...Sxd2
- 1.Sg4?
- 1...Kf5
- 2.Sc5#
- 1...Sxd2
- 2.Sc5#
- 1...Sa1
- 2.Sc5#
- 1...Sc1
- 2.Sc5#
- 1...Sd4
- 2.Sc5#
- 1...Sa5
- 2.Sc5#
- 1...Sc5
- 2.Sxc5#
- 1...Sa2
- 2.Qxd3#
- 1...Sc2
- 2.Qxd3#
- 1...Sd5
- 2.Qh7#
- 1...Sc6
- 2.Qxd3#
- 1...f3!
- 1...Kf5
- 1.Sf7?
- 1...Kf5
- 2.Sc5#
- 2.Sd6#
- 1...Sxd2
- 2.Sc5#
- 1...Sa1
- 2.Sc5#
- 1...Sc1
- 2.Sc5#
- 1...Sd4
- 2.Sc5#
- 1...Sa5
- 2.Sc5#
- 1...Sc5
- 2.Sxc5#
- 1...Sa2
- 2.Qxd3#
- 1...Sc2
- 2.Qxd3#
- 1...Sd5
- 2.Sd6#
- 1...Sc6
- 2.Qxd3#
- 1...f3!
- 1...Kf5
- 1.Sg8?
- 1...Kf5
- 2.Sc5#
- 1...Sxd2
- 2.Sc5#
- 1...Sa1
- 2.Sc5#
- 1...Sc1
- 2.Sc5#
- 1...Sd4
- 2.Sc5#
- 1...Sa5
- 2.Sc5#
- 1...Sc5
- 2.Sxc5#
- 1...Sa2
- 2.Qxd3#
- 1...Sc2
- 2.Qxd3#
- 1...Sd5
- 2.Qh7#
- 1...Sc6
- 2.Qxd3#
- 1...f3!
- 1...Kf5
- 1.Rxd3?
- threat
- 2.Qh7#
- 1...Sd4
- 2.Sc5#
- 1...Sxd3!
- threat
- 1.Rg3?
- 1...Sxd2
- 2.Sc5#
- 1...f3
- 2.Rg4#
- 1...Sa1
- 2.Sc5#
- 1...Sc1
- 2.Sc5#
- 1...Sd4
- 2.Sc5#
- 1...Sa5
- 2.Sc5#
- 1...Sc5
- 2.Sxc5#
- 1...Sa2
- 2.Qxd3#
- 1...Sc2
- 2.Qxd3#
- 1...Sd5
- 2.Qh7#
- 1...Sc6
- 2.Qxd3#
- 1...fxg3!
- 1...Sxd2
- 1.Qd6?
- 1...Sxd2
- 2.Sc5#
- 1...f3
- 2.Rh4#
- 1...Sa1
- 2.Sc5#
- 1...Sc1
- 2.Sc5#
- 1...Sd4
- 2.Sc5#
- 1...Sa5
- 2.Sc5#
- 1...Sc5
- 2.Sxc5#
- 1...Sa2
- 2.Qxd3#
- 1...Sc2
- 2.Qxd3#
- 1...Sc6
- 2.Qxd3#
- 1...Sd5!
- 1...Sxd2
- 1.Qxb7+?
- 1...Sd5
- 2.Qh7#
- 1...Sc6
- 2.Qxc6#
- 1...Bxb7!
- 1...Sd5
- 1.Qd8?
- 1...Sxd2
- 2.Sc5#
- 1...f3
- 2.Rh4#
- 1...Sa1
- 2.Sc5#
- 1...Sc1
- 2.Sc5#
- 1...Sd4
- 2.Sc5#
- 1...Sa5
- 2.Sc5#
- 1...Sc5
- 2.Sxc5#
- 1...Sa2
- 2.Qxd3#
- 1...Sc2
- 2.Qxd3#
- 1...Sc6
- 2.Qxd3#
- 1...Sd5!
- 1...Sxd2
- 1.g6?
- threat
- 2.Sg5#
- 1...f3
- 2.Rh4#
- 1...Sd5!
- threat
- 1.Kg4?
- Keys
- 1.Sf5!
- 1...Kxf5
- 2.Sc5#
- 1...Sxd2
- 2.Sc5#
- 1...f3
- 2.Sg3#
- 1...Sa1
- 2.Sc5#
- 1...Sc1
- 2.Sc5#
- 1...Sd4
- 2.Sc5#
- 1...Sa5
- 2.Sc5#
- 1...Sc5
- 2.Sxc5#
- 1...Sa2
- 2.Qxd3#
- 1...Sc2
- 2.Qxd3#
- 1...Sd5
- 2.Sd6#
- 1...Sc6
- 2.Qxd3#
- 1...Kxf5
- 1.Sf5!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- S(a);N_GUARD::S(F)
- S(a);N_GUARD,XP(A)::S(F)
- S(a);N_GUARD::S(F),XS(a)
- S(c);N_GUARD::QAB1(H),XP(b)
- S(c);SBLOCK::QAB(H)
- P(e);OGATEB,SBLOCK::R(B)
- Tries
- Try
- K(D);S_FLIGHT
- Vars
- S(a);N_GUARD,XP(A)::S(F)
- S(a);N_GUARD::S(F)
- S(a);N_GUARD::S(F),XS(a)
- S(c);N_GUARD::QAB1(H),XP(b)
- S(c);SBLOCK::QAB(H)
- Refutation
- P(e);
- Try
- K(D);P-FLIGHT
- Vars
- S(a);N_GUARD,XP(A)::S(F)
- S(a);N_GUARD::S(F)
- S(a);N_GUARD::S(F),XS(a)
- S(c);N_GUARD::QAB1(H),XP(b)
- S(c);SBLOCK::QAB(H)
- Refutation
- P(e);
- Try
- K(D);S_FLIGHT
- Vars
- S(a);N_GUARD,XP(A)::S(F)
- P(e);OGATEB,SBLOCK::R(B)
- S(a);N_GUARD::S(F)
- S(a);N_GUARD::S(F),XS(a)
- S(c);N_GUARD::QAB1(H),XP(b)
- Refutation
- S(c);
- Try
- S(G);
- Vars
- K(d);S_FLIGHT::QAB(H)+S(F)
- S(a);N_GUARD,XP(A)::S(F)
- S(a);N_GUARD::S(F)
- S(a);N_GUARD::S(F),XS(a)
- S(c);N_GUARD::QAB1(H),XP(b)
- S(c);SBLOCK::QAB(H)
- Refutation
- P(e);
- Try
- S(G);
- Vars
- S(a);N_GUARD,XP(A)::S(F)
- S(a);N_GUARD::S(F)
- S(a);N_GUARD::S(F),XS(a)
- S(c);N_GUARD::QAB1(H),XP(b)
- S(c);SBLOCK::S(G)
- Refutation
- P(e);
- Try
- S(G);
- Vars
- K(d);S_FLIGHT::QAB(H)+S(F)
- S(a);N_GUARD,XP(A)::S(F)
- S(a);N_GUARD::S(F)
- S(a);N_GUARD::S(F),XS(a)
- S(c);N_GUARD::QAB1(H),XP(b)
- S(c);SBLOCK::QAB(H)
- Refutation
- P(e);
- Try
- R(B);XP(b)
- Threat
- QAB(H)
- Vars
- S(a);N_GUARD::S(F)
- Refutation
- S(c);XR(B)
- Try
- R(B);
- Vars
- S(a);N_GUARD,XP(A)::S(F)
- P(e);OGATEB,SBLOCK::R(B)
- S(a);N_GUARD::S(F)
- S(a);N_GUARD::S(F),XS(a)
- S(c);N_GUARD::QAB1(H),XP(b)
- S(c);SBLOCK::QAB(H)
- Refutation
- P(e);XR(B)
- Try
- Q(H);
- Vars
- S(a);N_GUARD,XP(A)::S(F)
- P(e);OGATEB,SBLOCK::R(B)
- S(a);N_GUARD::S(F)
- S(a);N_GUARD::S(F),XS(a)
- S(c);N_GUARD::QAB1(H),XP(b)
- Refutation
- S(c);
- Try
- Q(H);CHECK,XP(i)
- Vars
- S(c);P_SPINS(c),SBLOCK::QAB(H)
- S(c);N_GUARD,P_SPINS(c)::QAB(H),XS(c)
- Refutation
- B(h);XQ(H)
- Try
- Q(H);
- Vars
- S(a);N_GUARD,XP(A)::S(F)
- P(e);OGATEB,SBLOCK::R(B)
- S(a);N_GUARD::S(F)
- S(a);N_GUARD::S(F),XS(a)
- S(c);N_GUARD::QAB1(H),XP(b)
- Refutation
- S(c);
- Try
- P(C);
- Threat
- S(F)
- Vars
- P(e);OGATEB,SBLOCK::R(B)
- Refutation
- S(c);
- Try
- Actual
- S(G);
- Vars
- K(d);S_FLIGHT,XS(G)::QAB(H)+S(F)
- S(a);N_GUARD,XP(A)::S(F)
- P(e);N_GUARD,SBLOCK::S(G)
- S(a);N_GUARD::S(F)
- S(a);N_GUARD::S(F),XS(a)
- S(c);N_GUARD::QAB1(H),XP(b)
- S(c);SBLOCK::S(G)
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).