MESON Chess Problem Database
Problem Display
PID: 238757 (q7/3r1nn1/5Q2/3k4/2RNp1p1/1P1p4/3bP1BB/1b1R3K w - - 0 1)
Hermanson, Halvar
L'Italia Scacchistica, 1951
#2
9 + 10
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qc6
- 2.Qxc6#
- 1...Qa1
- 2.Qc6#
- 1...Qa2
- 2.Qc6#
- 1...Qa3
- 2.Qc6#
- 1...Qa5
- 2.Qc6#
- 1...Qa7
- 2.Qc6#
- 1...Qb8
- 2.Qc6#
- 1...Qd8
- 2.Qc6#
- 1...Qe8
- 2.Qc6#
- 1...Qf8
- 2.Qc6#
- 1...Qg8
- 2.Qc6#
- 1...Qh8
- 2.Qc6#
- 1...Rb7
- 2.Qc6#
- 1...Se5
- 2.Qxe5#
- 1...Sg5
- 2.Qe5#
- 1...Sd6
- 2.Qe5#
- 1...Sh6
- 2.Qe5#
- 1...Sd8
- 2.Qe5#
- 1...Sh8
- 2.Qe5#
- 1...Sf5
- 2.Qe6#
- 1...Sh5
- 2.Qe6#
- 1...Se6
- 2.Qxe6#
- 1...Se8
- 2.Qe6#
- 1...Qc6
- Tries
- 1.Sc2?
- threat
- 2.Bxe4#
- 1...Qe8
- 2.Qc6#
- 1...Sg5
- 2.Qe5#
- 1...Sd6
- 2.Qe5#
- 1...Re7!
- threat
- 1.Sb5?
- threat
- 2.Bxe4#
- 1...dxe2
- 2.Sc3#
- 1...Qe8
- 2.Qc6#
- 1...Sg5
- 2.Qe5#
- 1...Sd6
- 2.Qe5#
- 1...Re7!
- threat
- 1.Sc6?
- threat
- 2.Bxe4#
- 1...dxe2
- 2.Sb4#
- 1...Re7
- 2.Sxe7#
- 1...Sg5
- 2.Qe5#
- 1...Sd6
- 2.Qe5#
- 1...Qe8!
- threat
- 1.Se6?
- threat
- 2.Bxe4#
- 2.Rc5#
- 1...Sxe6
- 2.Bxe4#
- 1...dxe2
- 2.Sf4#
- 2.Rc5#
- 1...Bf4
- 2.Sxf4#
- 1...Se5
- 2.Qxe5#
- 1...Qc6
- 2.Bxe4#
- 2.Rd4#
- 1...Qa3
- 2.Bxe4#
- 1...Qa5
- 2.Bxe4#
- 1...Qa7
- 2.Bxe4#
- 1...Qc8
- 2.Bxe4#
- 1...Qf8
- 2.Bxe4#
- 1...Rc7
- 2.Sxc7#
- 2.Bxe4#
- 1...Be3
- 2.Bxe4#
- 1...Bb4
- 2.Sf4#
- 2.Bxe4#
- 1...Sg5
- 2.Rc5#
- 2.Qe5#
- 1...Sd6
- 2.Rc5#
- 2.Qe5#
- 1...g3!
- threat
- 1.Qe7?
- threat
- 2.Bxe4#
- 2.Qc5#
- 2.Qxe4#
- 1...dxe2
- 2.Qc5#
- 1...Qc6
- 2.Bxe4#
- 2.Qxe4#
- 1...Qa3
- 2.Bxe4#
- 2.Qxe4#
- 1...Qa5
- 2.Bxe4#
- 2.Qxe4#
- 1...Qa7
- 2.Bxe4#
- 2.Qxe4#
- 1...Qc8
- 2.Bxe4#
- 2.Qxe4#
- 1...Qe8
- 2.Bxe4#
- 2.Qc5#
- 1...Qf8
- 2.Bxe4#
- 2.Qxe4#
- 1...Rd6
- 2.Bxe4#
- 2.Qxe4#
- 1...Rc7
- 2.Bxe4#
- 2.Qxe4#
- 1...Bb4
- 2.Bxe4#
- 2.Qxe4#
- 1...Bf4
- 2.Bxe4#
- 2.Qc5#
- 1...Se5
- 2.Qc5#
- 2.Qxe5#
- 1...Sg5
- 2.Qc5#
- 2.Qe5#
- 2.Qxd7#
- 1...Sd6
- 2.Qe5#
- 1...Se6
- 2.Qxe6#
- 1...g3
- 2.Bxe4#
- 2.Qc5#
- 1...Rxe7!
- threat
- 1.Qf5+?
- 1...Se5
- 2.Qxe5#
- 1...Sxf5!
- 1...Se5
- 1.Qxf7+?
- 1...Se6
- 2.Qxe6#
- 2.Qf5#
- 2.Qxd7#
- 1...Rxf7!
- 1...Se6
- 1.Sc2?
- Keys
- 1.Sf5!
- threat
- 2.Bxe4#
- 1...dxe2
- 2.Se3#
- 1...Re7
- 2.Sxe7#
- 1...Qe8
- 2.Qc6#
- 1...Sg5
- 2.Qe5#
- 1...Sd6
- 2.Qe5#
- threat
- 1.Sf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 20
- Sets
- Q(j);N_GUARD::QAB1(I),XQ(j)
- Q(j);N_GUARD::QAB1(I)
- Q(j);N_GUARD,P_PINB(E)::QAB1(I)
- R(g);S_CUTQ(j)::QAB1(I)
- S(h);N_GUARD::QAR1(I),XS(h)
- S(h);N_GUARD::QAR1(I)
- S(i);N_GUARD::QAB1(I)
- S(i);N_GUARD::QAB1(I),XS(i)
- Tries
- Try
- S(H);
- Threat
- B(D),XP(d)
- Vars
- Q(j);N_GUARD::QAB1(I)
- S(h);N_GUARD::QAR1(I)
- Refutation
- R(g);
- Try
- S(H);
- Threat
- B(D),XP(d)
- Vars
- P(c);P_SPINB(b),XP(C)::S(H)
- Q(j);N_GUARD::QAB1(I)
- S(h);N_GUARD::QAR1(I)
- Refutation
- R(g);
- Try
- S(H);
- Threat
- B(D),XP(d)
- Vars
- P(c);P_SPINB(b),XP(C)::S(H)
- R(g);N_GUARD::S(H),XR(g)
- S(h);N_GUARD::QAR1(I)
- Refutation
- Q(j);
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- S(i);XS(H)::B(D),XP(d)
- B(b);N_GUARD,N_SPINP(d),P_SPINP(c)::S(H),XB(b)
- S(h);N_GUARD::QAR1(I),XS(h)
- Q(j);::B(D),XP(d)
- B(b);N_SPINP(d),P_SPINP(c)::B(D),XP(d)
- Refutation
- P(e);
- Try
- Q(I);
- Threat
- DUALS(3)
- Vars
- P(c);XP(C)::QAR1(I)
- S(h);N_GUARD::QAR1(I)
- S(i);N_GUARD::QAB1(I),XS(i)
- Refutation
- R(g);XQ(I)
- Try
- Q(I);CHECK
- Vars
- S(h);N_GUARD,P_SPINS(h)::QAR1(I),XS(h)
- Refutation
- S(i);XQ(I)
- Try
- Q(I);CHECK,XS(h)
- Refutation
- R(g);XQ(I)
- Try
- Actual
- S(H);
- Threat
- B(D),XP(d)
- Vars
- P(c);P_SPINB(b),XP(C)::S(H)
- R(g);N_GUARD::S(H),XR(g)
- Q(j);N_GUARD::QAB1(I)
- S(h);N_GUARD::QAR1(I)
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).