MESON Chess Problem Database
Problem Display
PID: 234062 (1n3N2/1KP4q/1B1k1P1r/1p2R2b/n1p1pPR1/3P4/B2N4/2r5 w - - 0 1)
Wirtanen, Erkki Aukusti
Il Due Mosse, 1960
#2
11 + 10
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qf5
- 2.cxb8Q#
- 2.cxb8B#
- 1...Qg6
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...Qg8
- 2.Sxe4#
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...Qxc7+
- 2.Bxc7#
- 1...Qd7
- 2.Sxe4#
- 1...Qe7
- 2.Sxe4#
- 1...Qf7
- 2.Sxe4#
- 1...Qg7
- 2.Sxe4#
- 1...Qh8
- 2.Sxe4#
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...Rg6
- 2.Sxe4#
- 1...Bf7
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...Sb2
- 2.Bc5#
- 1...Sc3
- 2.Bc5#
- 1...Sc5+
- 2.Bxc5#
- 1...Sd7
- 2.c8S#
- 1...cxd3
- 2.Rd5#
- 2.Re6#
- 1...c3
- 2.Rd5#
- 2.Re6#
- 1...Qf5
- Tries
- 1.Rgg5?
- threat
- 2.Rd5#
- 2.Re6#
- 1...Qxc7+
- 2.Bxc7#
- 1...Sc5+
- 2.Bxc5#
- 1...Sxb6
- 2.Re6#
- 1...Qf5
- 2.cxb8Q#
- 2.cxb8B#
- 1...Qg8
- 2.Sxe4#
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...Qd7
- 2.Sxe4#
- 2.Rd5#
- 1...Qe7
- 2.Sxe4#
- 2.Rd5#
- 1...Qf7
- 2.Sxe4#
- 1...Bg4
- 2.Rd5#
- 1...Bf7
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...Sc3
- 2.Bc5#
- 2.Re6#
- 1...Rxf6!
- threat
- 1.f7?
- threat
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...Sc5+
- 2.Bxc5#
- 1...Qxf7
- 2.Sxe4#
- 1...Bxg4
- 2.cxb8Q#
- 2.cxb8B#
- 1...Bxf7
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...Sxb6
- 2.cxb8Q#
- 2.cxb8B#
- 1...exd3
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...Re6
- 2.c8S#
- 1...Qf5
- 2.cxb8Q#
- 2.cxb8B#
- 1...Qg6
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...Qg8
- 2.Sxe4#
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...Qg7
- 2.Sxe4#
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...Qh8
- 2.Sxe4#
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...Ra1
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...Rb1
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...Rd1
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...Re1
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...Rf1
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...Rg1
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...Rh1
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...Rc2
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...Rc3
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...Rf6
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...Rg6
- 2.Sxe4#
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...Bg6
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...Sb2
- 2.Bc5#
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...Sc3
- 2.Bc5#
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...Sa6
- 2.c8S#
- 1...Sc6
- 2.c8S#
- 1...Sd7
- 2.c8S#
- 1...c3
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...e3
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...b4
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...cxd3!
- threat
- 1.Rgg5?
- Keys
- 1.Rg7!
- threat
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...Sc5+
- 2.Bxc5#
- 1...Qxg7
- 2.Sxe4#
- 1...Rxf6
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...Sxb6
- 2.cxb8Q#
- 2.cxb8B#
- 1...cxd3
- 2.Rd5#
- 2.Re6#
- 1...exd3
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...Qf5
- 2.cxb8Q#
- 2.cxb8B#
- 1...Qg6
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...Qg8
- 2.Sxe4#
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...Qh8
- 2.Sxe4#
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...Ra1
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...Rb1
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...Rd1
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...Re1
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...Rf1
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...Rg1
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...Rh1
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...Rc2
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...Rc3
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...Rg6
- 2.Sxe4#
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...Bd1
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...Be2
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...Bf3
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...Bg4
- 2.cxb8Q#
- 2.cxb8B#
- 1...Bg6
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...Bf7
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...Be8
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...Sb2
- 2.Bc5#
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...Sc3
- 2.Bc5#
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...Sa6
- 2.c8S#
- 1...Sc6
- 2.c8S#
- 1...Sd7
- 2.c8S#
- 1...c3
- 2.Rd5#
- 2.Re6#
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...e3
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- 1...b4
- 2.cxb8Q#
- 2.cxb8B#
- 2.c8S#
- threat
- 1.Rg7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 7
- Sets
- Q(i);N_PINP(J)::PXS(j)=Q
- Q(i);CHECK,OGATE,XP(J)::B(G),XQ(i)
- Q(i);N_GUARD::S(B),XP(d)
- R(h);S_CUTQ(i)::S(B),XP(d)
- S(b);N_GUARD::B(G)
- S(b);CHECK,N_GUARD::B(G),XS(b)
- S(j);N_PINP(J)::P=S
- Tries
- Try
- R(E);
- Threat
- DUALS(2)
- Vars
- Q(i);CHECK,OGATE,XP(J)::B(G),XQ(i)
- S(b);CHECK,N_GUARD::B(G),XS(b)
- S(b);XB(G)::R1(F)
- Q(i);N_PINP(J)::PXS(j)=Q
- Q(i);N_GUARD::S(B),XP(d)
- B(f);::R1(F)
- Refutation
- R(h);XP(H)
- Try
- P(H);N_SPINP(J)
- Threat
- DUALS(3)
- Vars
- S(b);CHECK,N_GUARD::B(G),XS(b)
- Q(i);N_GUARD,P_PINP(J),XP(H)::S(B),XP(d)
- B(f);XR(E)::PXS(j)=Q
- S(b);XB(G)::PXS(j)=Q
- R(h);::P=S
- Q(i);::PXS(j)=Q
- S(j);::P=S
- Refutation
- P(c);XP(C)
- Try
- Actual
- R(E);N_SPINP(J)
- Threat
- DUALS(3)
- Vars
- S(b);CHECK,N_GUARD::B(G),XS(b)
- Q(i);N_GUARD,P_PINP(J),XR(E)::S(B),XP(d)
- S(b);XB(G)::PXS(j)=Q
- Q(i);::PXS(j)=Q
- B(f);::PXS(j)=Q
- S(j);::P=S
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).