MESON Chess Problem Database
Problem Display
PID: 238754 (4K3/3P4/1pBpR3/2p3R1/bNnk1p2/Q2Pp1n1/1b3Pq1/4B1N1 w - - 0 1)
Hermanson, Halvar
L'Italia Scacchistica, 1950
#2
11 + 11
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qf1
- 2.Sf3#
- 2.Rd5#
- 1...Qf3
- 2.Sxf3#
- 1...Qh3
- 2.Sf3#
- 2.Rd5#
- 1...Qd5
- 2.Rxd5#
- 1...Qxg1
- 2.Rd5#
- 1...Qxf2
- 2.Rd5#
- 1...Qh2
- 2.Sf3#
- 2.Rd5#
- 1...Bc1
- 2.Bc3#
- 2.Qc3#
- 1...Bc3
- 2.Bxc3#
- 2.Qxc3#
- 1...Bc2
- 2.Sxc2#
- 1...Bb5
- 2.Sc2#
- 1...Bxc6
- 2.Sc2#
- 1...Sf1
- 2.Se2#
- 1...Sh1
- 2.Se2#
- 1...Se2
- 2.Sxe2#
- 1...Se4
- 2.Se2#
- 2.Rd5#
- 1...Sf5
- 2.Se2#
- 1...Sh5
- 2.Se2#
- 1...Sd2
- 2.Qxb2#
- 1...Sa5
- 2.Qxb2#
- 1...Se5
- 2.Qxb2#
- 1...f3
- 2.Rd5#
- 1...Qf1
- Tries
- 1.Bxg2?
- threat
- 2.Sf3#
- 2.Rd5#
- 1...Bd1
- 2.Sc6#
- 2.Rd5#
- 1...Bc6
- 2.Sc2#
- 2.Sxc6#
- 1...Sf5
- 2.Se2#
- 2.Sf3#
- 2.Re4#
- 1...Sd2
- 2.Rd5#
- 2.Rxd6#
- 2.Qxb2#
- 1...Se5
- 2.Rxd6#
- 2.Qxb2#
- 1...f3
- 2.Sxf3#
- 2.Rd5#
- 1...d5
- 2.Sf3#
- 2.Rxd5#
- 1...Bxd7+!
- threat
- 1.Bf3?
- threat
- 2.Rd5#
- 1...Qxf3
- 2.Sxf3#
- 1...Bc6
- 2.Sc2#
- 2.Sxc6#
- 1...Sf5
- 2.Se2#
- 2.Re4#
- 1...Se5
- 2.Rxd6#
- 2.Qxb2#
- 1...d5
- 2.Rxd5#
- 1...Bxd7+!
- threat
- 1.Re4+?
- 1...Sxe4
- 2.Se2#
- 2.Rd5#
- 1...Qxe4+!
- 1...Sxe4
- 1.Rxd6+?
- 1...Qd5
- 2.Sf3#
- 2.Rgxd5#
- 2.Rdxd5#
- 1...Sxd6+!
- 1...Qd5
- 1.Qb3?
- threat
- 2.Sc2#
- 2.Qxc4#
- 1...Qxf2
- 2.Rd5#
- 2.Qxc4#
- 1...cxb4
- 2.Qxc4#
- 1...Qd5
- 2.Sc2#
- 2.Rxd5#
- 1...Bc3
- 2.Bxc3#
- 2.Qxc4#
- 2.Qxc3#
- 1...Bb5
- 2.Sc2#
- 1...Sd2
- 2.Sc2#
- 2.Qxb2#
- 1...Sa3
- 2.Qxb2#
- 1...Sa5
- 2.Sc2#
- 2.Qxb2#
- 1...Se5
- 2.Sc2#
- 2.Qxb2#
- 1...b5
- 2.Sc2#
- 1...d5
- 2.Sc2#
- 1...Bxb3!
- threat
- 1.Bxg2?
- Keys
- 1.f3!
- threat
- 2.Rd5#
- 1...Qxf3
- 2.Sxf3#
- 1...Bxc6
- 2.Sxc6#
- 1...Sf5
- 2.Re4#
- 1...Se5
- 2.Rxd6#
- 1...d5
- 2.Rxd5#
- threat
- 1.f3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 1
- REMOVED MATES = 12
- Sets
- Q(b);N_GUARD::S(B),XQ(b)
- Q(b);N_GUARD::R1(G),XQ(b)
- Q(b);N_GUARD,XS(B)::R1(G)
- Q(b);N_GUARD,XP(C)::R1(G)
- B(e);N_GUARD::S(F),XB(e)
- B(e);N_GUARD::S(F)
- B(e);N_GUARD,P_PINP(J),XB(H)::S(F)
- S(d);N_GUARD::S(B)
- S(d);N_GUARD::S(B),XS(d)
- S(f);N_GUARD::QAB(D),XB(a)
- P(h);S_CUTQ(b)::R1(G)
- Tries
- Try
- B(H);P_SPINP(J),XQ(b)
- Threat
- DUALS(2)
- Refutation
- B(e);CHECK,XP(J)
- Try
- B(H);P_SPINP(J)
- Threat
- R1(G)
- Vars
- Q(b);XB(H)::S(B),XQ(b)
- P(k);::R1(G),XP(k)
- Refutation
- B(e);CHECK,XP(J)
- Try
- R(I);CHECK
- Refutation
- Q(b);CHECK,XR(I)
- Try
- R(I);CHECK,XP(k)
- Refutation
- S(f);CHECK,XR(I)
- Try
- Q(D);
- Threat
- DUALS(2)
- Vars
- P(i);XS(F)::QAR1(D),XS(f)
- B(e);::S(F)
- S(f);N_GUARD::QAB(D),XB(a)
- P(j);::S(F)
- P(k);::S(F)
- Refutation
- B(e);XQ(D)
- Try
- Actual
- P(C);
- Threat
- R1(G)
- Vars
- Q(b);XP(C)::S(B),XQ(b)
- B(e);P_PINP(J),XB(H)::S(F),XB(e)
- S(d);N_GUARD::R1(I)
- S(f);N_GUARD::R(I),XP(k)
- P(k);::R1(G),XP(k)
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).