MESON Chess Problem Database
Problem Display
PID: 213005 (8/3p4/BP1P1R2/P1pN1b2/Q1N1k2p/2p4P/2P3pK/6B1 w - - 0 1)
Hynonen, Veikko August
Stella Polaris, 1967
#2
12 + 7
SOLUTION
- SOUND
- Sets
- 1...Kf3
- 2.Se5#
- 1...Kxd5
- 2.Bb7#
- 1...Bxh3
- 2.Sxc3#
- 1...Bg4
- 2.Sxc3#
- 1...Be6
- 2.Sxc3#
- 1...Bg6
- 2.Sxc3#
- 1...Bh7
- 2.Sxc3#
- 1...Kf3
- Tries
- 1.Kxg2?
- 1...Kxd5
- 2.Bb7#
- 1...Bg4
- 2.Sxc3#
- 1...Be6
- 2.Sxc3#
- 1...Bg6
- 2.Sxc3#
- 1...Bh7
- 2.Sxc3#
- 1...Bxh3+!
- 1...Kxd5
- 1.Sce3+?
- 1...Kf3
- 2.Rxf5#
- 2.Qf4#
- 2.Qg4#
- 1...Ke5
- 2.Qf4#
- 1...c4!
- 1...Kf3
- 1.Sxc3+?
- 1...Kf3
- 2.Sd2#
- 2.Se5#
- 2.Rxf5#
- 1...Kf4!
- 1...Kf3
- 1.Bb5?
- 1...Kf3
- 2.Se5#
- 1...Bxh3
- 2.Sxc3#
- 1...Be6
- 2.Sxc3#
- 1...Bg4
- 2.Sxc3#
- 1...Bg6
- 2.Sxc3#
- 1...Bh7
- 2.Sxc3#
- 1...Kxd5!
- 1...Kf3
- 1.Bb7?
- 1...Bxh3
- 2.Sxc3#
- 2.Sb4#
- 2.Sf4#
- 2.Sc7#
- 2.Se7#
- 2.Rf4#
- 1...Be6
- 2.Sxc3#
- 2.Rf4#
- 1...Bg4
- 2.Sxc3#
- 2.Sb4#
- 2.Sf4#
- 2.Sc7#
- 2.Se7#
- 2.Rf4#
- 1...Bg6
- 2.Sxc3#
- 2.Sb4#
- 2.Sf4#
- 2.Sc7#
- 2.Se7#
- 2.Rf4#
- 1...Bh7
- 2.Sxc3#
- 2.Sb4#
- 2.Sf4#
- 2.Sc7#
- 2.Se7#
- 2.Rf4#
- 1...Kf3!
- 1...Bxh3
- 1.Bc8?
- 1...Kxd5
- 2.Bb7#
- 1...Bxh3
- 2.Sxc3#
- 1...Be6
- 2.Sxc3#
- 1...Bg4
- 2.Sxc3#
- 1...Bg6
- 2.Sxc3#
- 1...Bh7
- 2.Sxc3#
- 1...Kf3!
- 1...Kxd5
- 1.Rf7?
- 1...Kf3
- 2.Se5#
- 1...Bxh3
- 2.Sxc3#
- 1...Be6
- 2.Sxc3#
- 1...Bg4
- 2.Sxc3#
- 1...Bg6
- 2.Sxc3#
- 1...Bh7
- 2.Sxc3#
- 1...Kxd5!
- 1...Kf3
- 1.Rf8?
- 1...Kf3
- 2.Se5#
- 1...Bxh3
- 2.Sxc3#
- 1...Be6
- 2.Sxc3#
- 1...Bg4
- 2.Sxc3#
- 1...Bg6
- 2.Sxc3#
- 1...Bh7
- 2.Sxc3#
- 1...Kxd5!
- 1...Kf3
- 1.Qb5?
- 1...Kxd5
- 2.Bb7#
- 1...Bxh3
- 2.Sxc3#
- 1...Be6
- 2.Sxc3#
- 1...Bg4
- 2.Sxc3#
- 1...Bg6
- 2.Sxc3#
- 1...Bh7
- 2.Sxc3#
- 1...Kf3!
- 1...Kxd5
- 1.Qxd7?
- threat
- 2.Qxf5#
- 1...Kxd5
- 2.Qb7#
- 1...Bxh3
- 2.Sxc3#
- 1...Bxd7
- 2.Sxc3#
- 1...Be6
- 2.Sxc3#
- 2.Qxe6#
- 1...Bg4
- 2.Sxc3#
- 1...Bg6
- 2.Sxc3#
- 2.Qe6#
- 1...Bh7
- 2.Sxc3#
- 2.Qe6#
- 1...Kf3!
- threat
- 1.Qa2?
- 1...Kxd5
- 2.Bb7#
- 1...Bxh3
- 2.Sxc3#
- 1...Be6
- 2.Sxc3#
- 1...Bg4
- 2.Sxc3#
- 1...Bg6
- 2.Sxc3#
- 1...Bh7
- 2.Sxc3#
- 1...Kf3!
- 1...Kxd5
- 1.Qa3?
- 1...Kf3
- 2.Sd2#
- 1...Bxh3
- 2.Sxc3#
- 1...Be6
- 2.Sxc3#
- 1...Bg4
- 2.Sxc3#
- 1...Bg6
- 2.Sxc3#
- 1...Bh7
- 2.Sxc3#
- 1...Kxd5!
- 1...Kf3
- 1.Qb4?
- 1...Kf3
- 2.Se5#
- 1...Kxd5
- 2.Bb7#
- 1...Bxh3
- 2.Sxc3#
- 1...Be6
- 2.Sxc3#
- 1...Bg4
- 2.Sxc3#
- 1...Bg6
- 2.Sxc3#
- 1...Bh7
- 2.Sxc3#
- 1...cxb4!
- 1...Kf3
- 1.b7?
- 1...Kf3
- 2.Se5#
- 1...Bxh3
- 2.Sxc3#
- 1...Be6
- 2.Sxc3#
- 1...Bg4
- 2.Sxc3#
- 1...Bg6
- 2.Sxc3#
- 1...Bh7
- 2.Sxc3#
- 1...Kxd5!
- 1...Kf3
- 1.Kxg2?
- Keys
- 1.Qb3!
- 1...Kf3
- 2.Sd2#
- 1...Kxd5
- 2.Bb7#
- 1...Bxh3
- 2.Sxc3#
- 1...Be6
- 2.Sxc3#
- 1...Bg4
- 2.Sxc3#
- 1...Bg6
- 2.Sxc3#
- 1...Bh7
- 2.Sxc3#
- 1...Kf3
- 1.Qb3!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- K(c);P_SPINB(f),S_FLIGHT::S(F)
- K(c);OGATEB,S_FLIGHT,XS(H)::B(I)
- B(f);XP(D)::S(H),XP(b)
- B(f);::S(H),XP(b)
- Tries
- Try
- K(C);P-FLIGHT,XP(a)
- Vars
- K(c);OGATEB,S_FLIGHT,XS(H)::B(I)
- B(f);::S(H),XP(b)
- Refutation
- B(f);CHECK,XP(D)
- Try
- S(F);CHECK
- Vars
- K(c);OGATE,P-FLIGHT::QAB1(E)
- Refutation
- P(e);P_SPINP(e)
- Try
- S(H);CHECK,XP(b)
- Refutation
- K(c);P-FLIGHT,P_SPINB(f)
- Try
- B(I);
- Vars
- K(c);P_SPINB(f),S_FLIGHT::S(F)
- B(f);XP(D)::S(H),XP(b)
- B(f);::S(H),XP(b)
- Refutation
- K(c);S_FLIGHT,XS(H)
- Try
- B(I);
- Refutation
- K(c);P_SPINB(f),S_FLIGHT
- Try
- B(I);
- Vars
- K(c);OGATEB,S_FLIGHT,XS(H)::B(I)
- B(f);XP(D)::S(H),XP(b)
- B(f);::S(H),XP(b)
- Refutation
- K(c);P_SPINB(f),S_FLIGHT
- Try
- R(L);
- Vars
- K(c);P_SPINB(f),S_FLIGHT::S(F)
- B(f);XP(D)::S(H),XP(b)
- B(f);::S(H),XP(b)
- Refutation
- K(c);S_FLIGHT,XS(H)
- Try
- R(L);
- Vars
- K(c);P_SPINB(f),S_FLIGHT::S(F)
- B(f);XP(D)::S(H),XP(b)
- B(f);::S(H),XP(b)
- Refutation
- K(c);S_FLIGHT,XS(H)
- Try
- Q(E);
- Vars
- K(c);OGATEB,P_SPINP(e),S_FLIGHT,XS(H)::B(I)
- B(f);XP(D)::S(H),XP(b)
- B(f);::S(H),XP(b)
- Refutation
- K(c);P_SPINB(f),S_FLIGHT
- Try
- Q(E);XP(g)
- Threat
- QAB1(E),XB(f)
- Vars
- K(c);OGATEB,S_FLIGHT,XS(H)::QAB(E)
- B(f);XP(D)::S(H),XP(b)
- B(f);XQ(E)::S(H),XP(b)
- B(f);::S(H),XP(b)
- Refutation
- K(c);P_SPINB(f),S_FLIGHT
- Try
- Q(E);
- Vars
- K(c);OGATEB,S_FLIGHT,XS(H)::B(I)
- B(f);XP(D)::S(H),XP(b)
- B(f);::S(H),XP(b)
- Refutation
- K(c);P_SPINB(f),S_FLIGHT
- Try
- Q(E);
- Vars
- K(c);P_SPINB(f),P_SPINP(b),S_FLIGHT::S(F)
- B(f);XP(D)::S(H),XP(b)
- B(f);::S(H),XP(b)
- Refutation
- K(c);S_FLIGHT,XS(H)
- Try
- Q(E);
- Vars
- K(c);P_SPINB(f),S_FLIGHT::S(F)
- K(c);OGATEB,S_FLIGHT,XS(H)::B(I)
- B(f);XP(D)::S(H),XP(b)
- B(f);::S(H),XP(b)
- Refutation
- P(e);XQ(E)
- Try
- P(J);
- Vars
- K(c);P_SPINB(f),S_FLIGHT::S(F)
- B(f);XP(D)::S(H),XP(b)
- B(f);::S(H),XP(b)
- Refutation
- K(c);S_FLIGHT,XS(H)
- Try
- Actual
- Q(E);
- Vars
- K(c);P_SPINB(f),P_SPINP(b),S_FLIGHT::S(F)
- K(c);OGATEB,S_FLIGHT,XS(H)::B(I)
- B(f);XP(D)::S(H),XP(b)
- B(f);::S(H),XP(b)
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).