MESON Chess Problem Database
Problem Display
PID: 17149 (8/3n4/8/4p1Kb/1Nn1k1p1/1N2B1Q1/5PP1/8 w - - 0 1)
Kubbel, Leonid Ivanovich (AKA Kubbel, Karl Artur Leonid)
Rigaer Tageblatt, 1910
#2
7 + 6
| 2638 | White to Play | 1913 |
| 2681 | All Change Here! | 1919 |
| 3360 | Simple Two-move Themes | 1924 |
| 5501 | Chess Cameos | 1936 |
SOLUTION
- SOUND
- Sets
- 1...Bg6
- 2.Qxg4#
- 1...Bf7
- 2.Qxg4#
- 1...Be8
- 2.Qxg4#
- 1...Sb2
- 2.Sd2#
- 1...Sd2
- 2.Sxd2#
- 1...Sa3
- 2.Sd2#
- 1...Sxe3
- 2.Qxe3#
- 1...Sa5
- 2.Sd2#
- 1...Scb6
- 2.Sd2#
- 1...Sd6
- 2.Sd2#
- 1...Sc5
- 2.Sxc5#
- 1...Sdb6
- 2.Sc5#
- 1...Sf6
- 2.Sc5#
- 1...Sb8
- 2.Sc5#
- 1...Sf8
- 2.Sc5#
- 1...Bg6
- Tries
- 1.Bc1?
- threat
- 2.Qd3#
- 1...Sb2
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sc5!
- threat
- 1.Bd2?
- threat
- 2.Qd3#
- 1...Sb2
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sc5!
- threat
- 1.Bd4?
- threat
- 2.Qd3#
- 1...exd4
- 2.Qf4#
- 1...Sb2
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sc5!
- threat
- 1.Bf4?
- threat
- 2.Qd3#
- 1...exf4
- 2.Qxf4#
- 1...Sb2
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sc5!
- threat
- 1.Bc5?
- threat
- 2.Qd3#
- 1...Sb2
- 2.Sd2#
- 2.Qe3#
- 1...Se3
- 2.Sd2#
- 2.Qxe3#
- 1...Sxc5!
- threat
- 1.Bb6?
- threat
- 2.Qd3#
- 1...Sb2
- 2.Sd2#
- 2.Qe3#
- 1...Se3
- 2.Sd2#
- 2.Qxe3#
- 1...Sc5!
- threat
- 1.Ba7?
- threat
- 2.Qd3#
- 1...Sb2
- 2.Sd2#
- 2.Qe3#
- 1...Se3
- 2.Sd2#
- 2.Qxe3#
- 1...Sc5!
- threat
- 1.Qxe5+?
- 1...Scxe5
- 2.Sd2#
- 1...Sdxe5
- 2.Sc5#
- 1...Kxe5!
- 1...Scxe5
- 1.Qh3?
- 1...Sxe3
- 2.Qxe3#
- 1...Sc5
- 2.Sxc5#
- 1...Bg6
- 2.Qxg4#
- 1...Bf7
- 2.Qxg4#
- 1...Be8
- 2.Qxg4#
- 1...Sb2
- 2.Sd2#
- 1...Sd2
- 2.Sxd2#
- 1...Sa3
- 2.Sd2#
- 1...Sa5
- 2.Sd2#
- 1...Scb6
- 2.Sd2#
- 1...Sd6
- 2.Sd2#
- 1...Sdb6
- 2.Sc5#
- 1...Sf6
- 2.Sc5#
- 1...Sb8
- 2.Sc5#
- 1...Sf8
- 2.Sc5#
- 1...g3
- 2.Qf5#
- 1...gxh3!
- 1...Sxe3
- 1.f3+?
- 1...Kxe3
- 2.Qe1#
- 1...gxf3!
- 1...Kxe3
- 1.Bc1?
- Keys
- 1.Qh4!
- 1...Sxe3
- 2.f3#
- 1...Sc5
- 2.Sxc5#
- 1...Bg6
- 2.Qxg4#
- 1...Bf7
- 2.Qxg4#
- 1...Be8
- 2.Qxg4#
- 1...Sb2
- 2.Sd2#
- 1...Sd2
- 2.Sxd2#
- 1...Sa3
- 2.Sd2#
- 1...Sa5
- 2.Sd2#
- 1...Scb6
- 2.Sd2#
- 1...Sd6
- 2.Sd2#
- 1...Sdb6
- 2.Sc5#
- 1...Sf6
- 2.Sc5#
- 1...Sb8
- 2.Sc5#
- 1...Sf8
- 2.Sc5#
- 1...Sxe3
- 1.Qh4!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- B(e);N_GUARD::QAR2(E),XP(c)
- S(a);N_GUARD::S(C)
- S(a);N_GUARD::S(C),XS(a)
- S(a);OGATE,XB(D)::QAR1(E),XS(a)
- S(f);N_GUARD::S(C),XS(f)
- S(f);N_GUARD::S(C)
- Tries
- Try
- B(D);
- Threat
- QAB1(E)
- Vars
- S(a);N_GUARD::QAR1(E)
- S(a);N_GUARD::QAR1(E),XS(a)
- Refutation
- S(f);
- Try
- B(D);
- Threat
- QAB1(E)
- Vars
- S(a);N_GUARD::QAR1(E)
- S(a);N_GUARD::QAR1(E),XS(a)
- Refutation
- S(f);
- Try
- B(D);
- Threat
- QAB1(E)
- Vars
- P(d);N_GUARD,XB(D)::QAR1(E)
- S(a);N_GUARD::QAR1(E)
- S(a);N_GUARD::QAR1(E),XS(a)
- Refutation
- S(f);
- Try
- B(D);
- Threat
- QAB1(E)
- Vars
- P(d);OGATE,XB(D)::QAR1(E),XP(d)
- S(a);N_GUARD::QAR1(E)
- S(a);N_GUARD::QAR1(E),XS(a)
- Refutation
- S(f);
- Try
- B(D);
- Threat
- QAB1(E)
- Refutation
- S(f);XB(D)
- Try
- B(D);
- Threat
- QAB1(E)
- Refutation
- S(f);
- Try
- B(D);
- Threat
- QAB1(E)
- Refutation
- S(f);
- Try
- Q(E);CHECK,XP(d)
- Vars
- S(a);SBLOCK,XQ(E)::S(C)
- S(f);SBLOCK,XQ(E)::S(C)
- Refutation
- K(b);P-FLIGHT,XQ(E)
- Try
- Q(E);
- Vars
- S(a);OGATE,XB(D)::QAR1(E),XS(a)
- S(f);N_GUARD::S(C),XS(f)
- B(e);N_GUARD::QAR2(E),XP(c)
- S(a);N_GUARD::S(C)
- S(a);N_GUARD::S(C),XS(a)
- S(f);N_GUARD::S(C)
- P(c);OGATE::QAB1(E)
- Refutation
- P(c);XQ(E)
- Try
- P(A);CHECK
- Vars
- K(b);P-FLIGHT,XB(D)::QAR2(E)
- Refutation
- P(c);XP(A)
- Try
- Actual
- Q(E);P_PINP(c)
- Vars
- S(a);SBLOCK,XB(D)::P(A)
- S(f);N_GUARD::S(C),XS(f)
- B(e);N_GUARD::QAR2(E),XP(c)
- S(a);N_GUARD::S(C)
- S(a);N_GUARD::S(C),XS(a)
- S(f);N_GUARD::S(C)
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).