MESON Chess Problem Database
Problem Display
PID: 270291 (r1Nb4/8/n1NP1p2/1np5/Prkp1K2/Pq1p2R1/3P4/5Q1B w - - 0 1)
Parrinello, Mario
Simoni, Francesco
4th HM., Graz, 1987
#2
10 + 11
| 15601 | Albrecht-Leiss-Degener Collection | 2023 |
SOLUTION
- SOUND
- Sets
- 1...Qd1
- 2.Qxd3#
- 1...Qa2
- 2.Qxd3#
- 1...Qxa4
- 2.Qxd3#
- 1...Qb2
- 2.Qxd3#
- 1...Ba5
- 2.Sxa5#
- 1...Bb6
- 2.Sxb6#
- 1...Be7
- 2.Sa5#
- 2.Sb6#
- 1...Sc3
- 2.Qxd3#
- 1...Sxd6
- 2.Sxd6#
- 1...Sbc7
- 2.Sa5#
- 1...Sac7
- 2.Sb6#
- 1...f5
- 2.Se5#
- 1...Qd1
- Tries
- 1.S6e7?
- threat
- 2.Bd5#
- 1...Bxe7
- 2.Sb6#
- 1...Sc3
- 2.Qxd3#
- 1...Sac7
- 2.Sb6#
- 1...Sbc7!
- threat
- 1.S8e7?
- threat
- 2.Bd5#
- 1...Bxe7
- 2.Sa5#
- 1...Sc3
- 2.Qxd3#
- 1...Sbc7
- 2.Sa5#
- 1...Sac7!
- threat
- 1.Rxd3?
- threat
- 2.Rc3#
- 2.Rxd4#
- 1...Qxa4
- 2.Rc3#
- 1...Qxa3
- 2.Rc3#
- 1...Qc3
- 2.Rxc3#
- 1...Qd1
- 2.Rc3#
- 1...Qa2
- 2.Rc3#
- 1...Qc2
- 2.Rc3#
- 1...Qb1
- 2.Rc3#
- 1...Qb2
- 2.Rc3#
- 1...Sc3
- 2.Rxc3#
- 2.Rxd4#
- 1...Qxd3!
- threat
- 1.Qe2?
- threat
- 2.Qe6#
- 1...Sc3
- 2.Qxd3#
- 1...Sbc7
- 2.Sa5#
- 1...Sac7
- 2.Sb6#
- 1...dxe2!
- threat
- 1.Qg2?
- threat
- 2.Qd5#
- 1...Sbc7
- 2.Sa5#
- 1...Sac7
- 2.Sb6#
- 1...Sc3!
- threat
- 1.Qh3?
- threat
- 2.Qe6#
- 1...Sbc7
- 2.Sa5#
- 1...Sac7
- 2.Sb6#
- 1...f5
- 2.Se5#
- 1...Sc3!
- threat
- 1.Qe1?
- threat
- 2.Qe6#
- 1...Sbc7
- 2.Sa5#
- 1...Sac7
- 2.Sb6#
- 1...Sc3!
- threat
- 1.S6e7?
- Keys
- 1.Qf3!
- threat
- 2.Qd5#
- 1...Sc3
- 2.Qxd3#
- 1...Sbc7
- 2.Sa5#
- 1...Sac7
- 2.Sb6#
- threat
- 1.Qf3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 8
- Sets
- Q(a);N_GUARD::QAB1(A),XP(b)
- Q(a);N_GUARD,XP(F)::QAB1(A),XP(b)
- B(k);N_GUARD::S(H),XB(k)
- B(k);N_GUARD::S(J),XB(k)
- S(f);S_CUTQ(a)::QAB1(A),XP(b)
- S(f);XP(I)::S(J),XS(f)
- S(f);S_CUTB(k)::S(H)
- S(h);S_CUTB(k)::S(J)
- P(i);N_GUARD::S(H)
- Tries
- Try
- S(H);
- Threat
- B(B)
- Vars
- B(k);N_GUARD,XS(H)::S(J)
- S(f);S_CUTQ(a)::QAB1(A),XP(b)
- S(h);S_CUTB(k)::S(J)
- Refutation
- S(f);
- Try
- S(J);
- Threat
- B(B)
- Vars
- B(k);N_GUARD,XS(J)::S(H)
- S(f);S_CUTQ(a)::QAB1(A),XP(b)
- S(f);S_CUTB(k)::S(H)
- Refutation
- S(h);
- Try
- R(E);XP(b)
- Threat
- DUALS(2)
- Vars
- Q(a);XP(F)::QAB(A)+R(E),DCHECK
- Q(a);XP(D)::QAB(A)+R(E),DCHECK
- Q(a);::QAB(A)+R(E),DCHECK,XQ(a)
- Q(a);::QAB(A)+R(E),DCHECK
- Refutation
- Q(a);P_SPINQ(a),XR(E)
- Try
- Q(A);
- Threat
- QAB(A)
- Vars
- S(f);S_CUTQ(a)::QAB1(A),XP(b)
- S(f);S_CUTB(k)::S(H)
- S(h);S_CUTB(k)::S(J)
- Refutation
- P(b);N_SPINP(b),XQ(A)
- Try
- Q(A);N_PINP(b)
- Threat
- QAB1(A)
- Vars
- S(f);S_CUTB(k)::S(H)
- S(h);S_CUTB(k)::S(J)
- Refutation
- S(f);
- Try
- Q(A);N_PINP(b)
- Threat
- QAB(A)
- Vars
- S(f);S_CUTB(k)::S(H)
- S(h);S_CUTB(k)::S(J)
- P(i);N_GUARD::S(H)
- Refutation
- S(f);
- Try
- Q(A);N_PINP(b)
- Threat
- QAB(A)
- Vars
- S(f);S_CUTB(k)::S(H)
- S(h);S_CUTB(k)::S(J)
- Refutation
- S(f);
- Try
- Actual
- Q(A);N_PINP(b)
- Threat
- QAB1(A)
- Vars
- S(f);S_CUTQ(a)::QAB1(A),XP(b)
- S(f);S_CUTB(k)::S(H)
- S(h);S_CUTB(k)::S(J)
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).