MESON Chess Problem Database
Problem Display
PID: 239186 (6bq/P7/1Knp2p1/2NkPQ1N/2p3R1/2P1r3/4P2b/8 w - - 0 1)
Hermanson, Halvar
Sachove umeni (Ceskoslovensky sach), 1982
#2
9 + 9
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qxe5
- 2.Sf6#
- 1...Qf6
- 2.Sxf6#
- 1...Qh6
- 2.Sf6#
- 1...Qh7
- 2.Sf6#
- 1...Rxc3
- 2.Qe4#
- 1...Rd3
- 2.Qe4#
- 2.e4#
- 1...Rf3
- 2.Qe4#
- 2.e4#
- 1...Rg3
- 2.Sf4#
- 2.Qe4#
- 2.e4#
- 1...Rh3
- 2.Qe4#
- 2.e4#
- 1...Re4
- 2.Qxe4#
- 1...Rxe5
- 2.e4#
- 1...Bg1
- 2.Sf4#
- 1...Bf4
- 2.Sxf4#
- 1...Bxe5
- 2.Sf4#
- 1...Be6
- 2.Qxe6#
- 1...Bh7
- 2.Qe6#
- 1...Sb4
- 2.Rd4#
- 1...Sd4
- 2.Rxd4#
- 1...Sa5
- 2.Rd4#
- 1...Sxe5
- 2.Rd4#
- 2.a8Q#
- 2.a8B#
- 1...Sxa7
- 2.Rd4#
- 1...Se7
- 2.Rd4#
- 1...Sb8
- 2.Rd4#
- 1...Sd8
- 2.Rd4#
- 1...dxe5
- 2.Qd7#
- 1...Qxe5
- Tries
- 1.Qd7?
- threat
- 2.Qxd6#
- 1...Kxe5
- 2.Rg5#
- 1...Qxe5
- 2.Qxc6#
- 1...Rxe5
- 2.Qxc6#
- 1...Bxe5
- 2.Qxc6#
- 1...Sxe5
- 2.Rd4#
- 1...Qf6!
- threat
- 1.Qf3+?
- 1...Kxe5
- 2.Rg5#
- 1...Re4
- 2.Qxe4#
- 1...Rxf3!
- 1...Kxe5
- 1.Qf7+?
- 1...Kxe5
- 2.Sd7#
- 2.Rg5#
- 1...Bxf7!
- 1...Kxe5
- 1.e6+?
- 1...Qe5
- 2.Sf6#
- 1...Re5
- 2.e4#
- 1...Be5
- 2.Sf4#
- 1...Se5
- 2.Rd4#
- 2.a8Q#
- 2.a8B#
- 1...gxf5!
- 1...Qe5
- 1.a8Q?
- threat
- 2.Rd4#
- 2.Qxc6#
- 1...Rxc3
- 2.Qe4#
- 2.Qxc6#
- 1...dxc5
- 2.Qxc6#
- 1...Rd3
- 2.Qe4#
- 2.Qxc6#
- 2.e4#
- 1...Re4
- 2.Qxe4#
- 2.Qxc6#
- 1...Bf4
- 2.Sxf4#
- 2.Qxc6#
- 1...gxf5!
- threat
- 1.a8B?
- threat
- 2.Bxc6#
- 2.Rd4#
- 1...Rxc3
- 2.Bxc6#
- 2.Qe4#
- 1...dxc5
- 2.Bxc6#
- 1...dxe5
- 2.Rd4#
- 2.Qd7#
- 1...Rd3
- 2.Bxc6#
- 2.Qe4#
- 2.e4#
- 1...Re4
- 2.Bxc6#
- 2.Qxe4#
- 1...Bf4
- 2.Sxf4#
- 2.Bxc6#
- 1...gxf5!
- threat
- 1.Qd7?
- Keys
- 1.Rxg6!
- threat
- 2.Rxd6#
- 1...Qxe5
- 2.Sf6#
- 1...Rxe5
- 2.e4#
- 1...Bxe5
- 2.Sf4#
- 1...Sxe5
- 2.a8Q#
- 2.a8B#
- 1...dxc5
- 2.Rd6#
- 1...dxe5
- 2.Qd7#
- 1...Qf6
- 2.Sxf6#
- 1...Qh6
- 2.Sf6#
- 1...Be6
- 2.Qxe6#
- threat
- 1.Rxg6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 13
- Sets
- Q(i);N_GUARD,P_SPINQ(i),XP(E)::S(G)
- Q(i);N_GUARD::S(G),XQ(i)
- Q(i);N_GUARD::S(G)
- R(b);N_GUARD,XP(B)::QAB1(F)
- R(b);N_GUARD::QAB1(F),XR(b)
- R(b);OGATE,P_SPINR(b),XP(E)::P(A)
- B(a);N_GUARD::S(G)
- B(a);N_GUARD::S(G),XB(a)
- B(a);N_GUARD,P_SPINB(a),XP(E)::S(G)
- B(h);N_GUARD::QAB1(F),XB(h)
- B(h);N_GUARD::QAB1(F)
- S(e);N_GUARD::R1(C)
- S(e);N_GUARD::R1(C),XS(e)
- S(e);N_GUARD,XP(I)::R1(C)
- P(f);OGATEB,P_SPINP(f),SBLOCK,XP(E)::QAR2(F)
- Tries
- Try
- Q(F);P_PINP(f)
- Threat
- QAR1(F),XP(f)
- Vars
- K(d);N_SPINP(f),OGATEB,P-FLIGHT,XP(E)::R(C)
- Q(i);SBLOCK,XP(E)::QAB1(F),XS(e)
- R(b);SBLOCK,XP(E)::QAB1(F),XS(e)
- B(a);SBLOCK,XP(E)::QAB1(F),XS(e)
- S(e);N_GUARD,SBLOCK,XP(E)::R1(C)
- Refutation
- Q(i);
- Try
- Q(F);CHECK
- Vars
- K(d);P-FLIGHT,XP(E)::R(C)
- R(b);N_GUARD,P_SPINR(b)::QAB1(F),XR(b)
- Refutation
- R(b);XQ(F)
- Try
- Q(F);CHECK
- Refutation
- B(h);XQ(F)
- Try
- P(E);CHECK
- Vars
- Q(i);P_SPINQ(i)::S(G)
- R(b);OGATE,P_SPINR(b)::P(A)
- B(a);P_SPINB(a)::S(G)
- Refutation
- P(g);XQ(F)
- Try
- P(I);P_PINS(e)
- Threat
- DUALS(2)
- Vars
- P(f);XS(D)::QAB1(I),XS(e)
- Refutation
- P(g);XQ(F)
- Try
- P(I);P_PINS(e)
- Threat
- DUALS(2)
- Vars
- P(f);XS(D)::B(I),XS(e)
- Refutation
- P(g);XQ(F)
- Try
- Actual
- R(C);XP(g)
- Threat
- R1(C),XP(f)
- Vars
- Q(i);N_GUARD,P_SPINQ(i),XP(E)::S(G)
- R(b);OGATE,P_SPINR(b),XP(E)::P(A)
- B(a);N_GUARD,P_SPINB(a),XP(E)::S(G)
- S(e);P_SPINS(e),XP(E)::P=Q
- P(f);XS(D)::R1(C)
- P(f);OGATEB,P_SPINP(f),SBLOCK,XP(E)::QAR2(F)
- Q(i);N_GUARD::S(G),XQ(i)
- Q(i);N_GUARD::S(G)
- B(h);N_GUARD::QAB1(F),XB(h)
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).