MESON Chess Problem Database
Problem Display
PID: 22151 (B5K1/4Q3/2PN2p1/Rnrk1p2/2bb1PN1/1pPr1P2/8/3R4 w - - 0 1)
Hynonen, Veikko August
Helsingin Sanomat, 1961
#2
11 + 9
SOLUTION
- SOUND
- Sets
- 1...Rxc3
- 2.Sf6#
- 2.Qe5#
- 1...Re3
- 2.Sxe3#
- 2.Sf6#
- 1...Rxf3
- 2.Sf6#
- 2.Qe5#
- 1...Bg1
- 2.Sf6#
- 2.Qe5#
- 1...Bf2
- 2.Sf6#
- 2.Qe5#
- 1...Be3
- 2.Sxe3#
- 2.Sf6#
- 2.Qe5#
- 1...Be5
- 2.Se3#
- 2.Qxe5#
- 1...Bf6
- 2.Se3#
- 2.Sxf6#
- 1...Bg7
- 2.Se3#
- 1...Bh8
- 2.Se3#
- 1...Sa3
- 2.c7#
- 1...Sxc3
- 2.c7#
- 1...Rxc3
- Tries
- 1.Se3+?
- 1...Bxe3
- 2.Qe5#
- 1...Rxe3!
- 1...Bxe3
- 1.Se4?
- threat
- 2.Qf7#
- 1...Rxf3
- 2.Sef6#
- 2.Sgf6#
- 2.Qe5#
- 1...fxe4
- 2.fxe4#
- 1...Sd6
- 2.Qxd6#
- 1...Sc7
- 2.Qd6#
- 2.Qd7#
- 1...Bxc3!
- threat
- 1.Sxb5?
- threat
- 2.Sc7#
- 2.Qd6#
- 2.Qd7#
- 2.Qf7#
- 1...Rxf3
- 2.Sf6#
- 2.Sc7#
- 2.Rxd4#
- 2.Qe5#
- 1...Rxb5
- 2.c7#
- 1...Rxc6
- 2.Sc7#
- 2.Qd6#
- 1...Bxc3
- 2.Se3#
- 2.Qd6#
- 2.Qd7#
- 2.Qf7#
- 1...Re3
- 2.Sxe3#
- 2.Sf6#
- 2.Sc7#
- 2.Rxd4#
- 2.Qd6#
- 2.Qd7#
- 1...Be5
- 2.Se3#
- 2.Qxe5#
- 2.Qf7#
- 1...Bxb5!
- threat
- 1.Sxf5?
- threat
- 2.Qe4#
- 2.Qf7#
- 1...Rxf3
- 2.Sf6#
- 2.Qe5#
- 1...Rxc6
- 2.Qd6#
- 1...Sxc3
- 2.Qd6#
- 2.Qd7#
- 2.Qf7#
- 2.c7#
- 1...Re3
- 2.Sgxe3#
- 2.Sf6#
- 2.Sfxe3#
- 1...Be5
- 2.Sge3#
- 2.Sfe3#
- 2.Qxe5#
- 2.Qf7#
- 1...Sd6
- 2.Qxd6#
- 1...Sc7
- 2.Qd6#
- 2.Qe4#
- 2.Qd7#
- 1...gxf5!
- threat
- 1.Sc8?
- threat
- 2.Sb6#
- 2.Qf7#
- 1...Rxf3
- 2.Sf6#
- 2.Sb6#
- 2.Qe5#
- 1...Rxc6
- 2.Qd6#
- 1...Re3
- 2.Sxe3#
- 2.Sf6#
- 2.Sb6#
- 1...Sd6
- 2.Sb6#
- 2.Qxd6#
- 1...Sc7
- 2.Sb6#
- 2.Qd6#
- 2.Qd7#
- 1...Bxc3!
- threat
- 1.Se8?
- threat
- 2.Qf7#
- 1...Rxf3
- 2.Sgf6#
- 2.Sef6#
- 2.Qe5#
- 1...Rxc6
- 2.Sc7#
- 2.Qd6#
- 1...Re3
- 2.Sxe3#
- 2.Sgf6#
- 2.Sef6#
- 1...Sd6
- 2.Sc7#
- 2.Qxd6#
- 1...Sc7
- 2.Sxc7#
- 2.Qd6#
- 2.Qd7#
- 1...Bxc3!
- threat
- 1.Rxd3?
- threat
- 2.Se3#
- 2.Sf6#
- 2.Qe5#
- 1...Rxc6
- 2.Qe5#
- 1...fxg4
- 2.Qe5#
- 1...Bxd3!
- threat
- 1.cxd4?
- threat
- 2.Qe5#
- 1...Re3
- 2.Sxe3#
- 2.Sf6#
- 1...Kxd4+!
- threat
- 1.Se3+?
- Keys
- 1.Qd7!
- threat
- 2.Sxb5#
- 1...Rxf3
- 2.Sf6#
- 1...Rxc6
- 2.Se4#
- 1...Sxc3
- 2.Se4#
- 2.Sb5#
- 2.Sxf5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 2.c7#
- 1...Sxd6
- 2.c7#
- 1...Be5
- 2.Se3#
- 1...Sa3
- 2.Se4#
- 2.Sb5#
- 2.Sxf5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 2.c7#
- 1...Sa7
- 2.Se4#
- 2.Sb5#
- 2.Sxf5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Sc7
- 2.Se4#
- 2.Sb5#
- 2.Sxf5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- threat
- 1.Qd7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 4
- Sets
- B(d);N_GUARD,P_SPINR(b)::S(E)
- S(e);P_SPINR(f)::B(J)+P(G)
- S(e);P_SPINR(f),XP(B)::B(J)+P(G)
- Tries
- Try
- S(E);CHECK
- Vars
- B(d);P_SPINR(b),XS(E)::QAR1(I)
- Refutation
- R(b);P_SPINB(d),XS(E)
- Try
- S(H);
- Threat
- QAB(I)
- Vars
- P(h);OGATE,XS(H)::P(C),XP(h)
- S(e);N_GUARD,P_SPINR(f)::QAR1(I),XS(e)
- Refutation
- B(d);P_SPINR(b),XP(B)
- Try
- S(H);XS(e)
- Threat
- DUALS(4)
- Vars
- R(f);N_GUARD,P_SPINR(f),XS(H)::B(J)+P(G)
- Refutation
- B(c);XS(H)
- Try
- S(H);XP(h)
- Threat
- DUALS(2)
- Vars
- R(f);P_SPINR(f),P_SPINS(e),XP(G)::QAR1(I)
- S(e);N_GUARD,P_SPINR(f)::QAR1(I),XS(e)
- Refutation
- P(i);XS(H)
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- R(f);P_SPINR(f),P_SPINS(e),XP(G)::QAR1(I)
- Refutation
- B(d);P_SPINR(b),XP(B)
- Try
- S(H);
- Threat
- QAB(I)
- Refutation
- B(d);P_SPINR(b),XP(B)
- Try
- R(A);P_PINB(d),XR(b)
- Threat
- DUALS(3)
- Vars
- R(f);P_SPINR(f),P_SPINS(e),XP(G)::QAR1(I)
- P(h);XS(E)::QAR1(I)
- Refutation
- B(c);N_SPINB(d),XR(A)
- Try
- P(B);XB(d)
- Threat
- QAR1(I)
- Refutation
- K(g);CHECK,P-FLIGHT,P_SPINR(b),XP(B)
- Try
- Actual
- Q(I);
- Threat
- QAR(I)+S(H),XS(e)
- Vars
- R(b);P_SPINB(d),XP(C)::S(E)
- R(f);P_SPINR(f),P_SPINS(e),XP(G)::QAR(I)+S(H)
- S(e);P_SPINR(f),P_SPINS(e),XS(H)::B(J)+P(G)
- B(d);N_GUARD,P_SPINR(b)::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).