MESON Chess Problem Database
Problem Display
PID: 15852 (5Rn1/5Ppb/4N1kp/3N2np/K3P1qB/4Q3/2B2pR1/4b3 w - - 0 1)
Loustau, Jean-Marc
4th HM., Phenix, 1988
#2
10 + 10
| 702 | Phenix | 1990 |
| 3297 | FIDE Album (1986-1988) | 1995 |
SOLUTION
- SOUND
- Sets
- 1...Qd1
- 2.Sef4#
- 1...Qe2
- 2.Sef4#
- 1...Qh3
- 2.Sef4#
- 1...Qf5
- 2.exf5#
- 1...Qxg2
- 2.Sef4#
- 1...Qxe4+
- 2.Bxe4#
- 2.Qxe4#
- 1...Qf4
- 2.Sexf4#
- 1...Sf3
- 2.Sdf4#
- 2.Sef4#
- 1...Sxe4
- 2.Bxe4#
- 2.Qxe4#
- 1...Sxf7
- 2.Sdf4#
- 2.Sef4#
- 1...Sf6
- 2.Se7#
- 1...Qd1
- Tries
- 1.Qd4?
- threat
- 2.Qxg7#
- 1...Qxe6
- 2.Sf4#
- 1...Qxe4
- 2.Bxe4#
- 2.Qxe4#
- 1...Sxe4
- 2.Bxe4#
- 2.Qxe4#
- 1...Sxe6
- 2.e5#
- 1...Sf6
- 2.Se7#
- 1...Bc3!
- threat
- 1.Qxg5+?
- 1...Qxg5
- 2.Sef4#
- 2.e5#
- 1...hxg5!
- 1...Qxg5
- 1.fxg8Q?
- threat
- 2.Se7#
- 2.Rf6#
- 2.Qxg7#
- 1...Qxe4+
- 2.Bxe4#
- 2.Qxe4#
- 1...Qxe6
- 2.Sf4#
- 2.Qxe6#
- 1...Sxe6
- 2.Se7#
- 2.Rf6#
- 2.Qxe6#
- 2.Qf7#
- 1...f1Q
- 2.Se7#
- 2.Qxg7#
- 1...f1R
- 2.Se7#
- 2.Qxg7#
- 1...Qf3
- 2.Se7#
- 2.Qxg7#
- 1...Qf5
- 2.Se7#
- 2.Qxg7#
- 2.exf5#
- 1...Qf4
- 2.Sdxf4#
- 2.Se7#
- 2.Sexf4#
- 2.Qxg7#
- 1...Bc3
- 2.Se7#
- 1...Bb4
- 2.Rf6#
- 2.Qxg7#
- 1...Sf7
- 2.Sdf4#
- 2.Se7#
- 2.Sef4#
- 2.Qxf7#
- 2.Qxg7#
- 1...Bxg8!
- threat
- 1.fxg8R?
- threat
- 2.Se7#
- 2.Rf6#
- 2.Rxg7#
- 1...Qxe4+
- 2.Bxe4#
- 2.Qxe4#
- 1...Qxe6
- 2.Sf4#
- 1...Sxe6
- 2.Se7#
- 2.Rf6#
- 1...f1Q
- 2.Se7#
- 2.Rxg7#
- 1...f1R
- 2.Se7#
- 2.Rxg7#
- 1...Qf3
- 2.Se7#
- 2.Rxg7#
- 1...Qf5
- 2.Se7#
- 2.Rxg7#
- 2.exf5#
- 1...Qf4
- 2.Sdxf4#
- 2.Se7#
- 2.Sexf4#
- 2.Rxg7#
- 1...Bc3
- 2.Se7#
- 1...Bb4
- 2.Rf6#
- 2.Rxg7#
- 1...Sf7
- 2.Sdf4#
- 2.Se7#
- 2.Sef4#
- 2.Rxg7#
- 1...Bxg8!
- threat
- 1.Qd4?
- Keys
- 1.Qb6!
- threat
- 2.Sef4#
- 1...Qxe4+
- 2.Bxe4#
- 1...Qxe6
- 2.e5#
- 1...Sxe4
- 2.Bxe4#
- 1...Sxe6
- 2.Sf4#
- 1...Qf4
- 2.Sexf4#
- 1...Sf6
- 2.Se7#
- threat
- 1.Qb6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 5
- Sets
- Q(c);N_GUARD,N_PINP(E),P_PINB(A),P_SPINS(d)::S(H)
- Q(c);N_GUARD,N_PINP(E),P_SPINS(d)::S(H)
- Q(c);N_PINP(E),P_SPINS(d)::P(E),XQ(c)
- Q(c);N_GUARD,N_PINP(E),XR(B)::S(H)
- Q(c);N_GUARD,P_SPINS(d)::S(H),XQ(c)
- S(j);N_GUARD,SBLOCK::S(G)
- Tries
- Try
- Q(C);N_SPINP(E)
- Threat
- QAR1(C),XP(h)
- Vars
- Q(c);N_GUARD,P_SPINS(d),XS(H)::S(G)
- S(d);N_GUARD,P_SPINQ(c),XS(H)::B(A)+P(E)
- S(j);N_GUARD::S(G)
- Refutation
- B(a);
- Try
- Q(C);CHECK,XS(d)
- Refutation
- P(g);XQ(C)
- Try
- P(I);P_PINP(h),XS(j)
- Threat
- DUALS(3)
- Vars
- B(a);::S(G)
- Refutation
- B(i);N_SPINP(h),XQ(I)
- Try
- P(I);P_PINP(h),XS(j)
- Threat
- DUALS(3)
- Vars
- Q(c);N_GUARD,N_PINP(E),P_SPINS(d),XS(H)::S(G)
- B(a);::S(G)
- Refutation
- B(i);N_SPINP(h),XR(I)
- Try
- Actual
- Q(C);
- Threat
- QAR(C)+S(H),DCHECK
- Vars
- Q(c);CHECK,OGATE,P_SPINQ(c),P_SPINS(d),XP(E)::B(A),XQ(c)
- Q(c);N_PINP(E),P_SPINQ(c),P_SPINS(d),XS(H)::B(A)+P(E)
- S(d);OGATE,P_SPINQ(c),P_SPINS(d),XP(E)::B(A),XS(d)
- S(d);P_SPINQ(c),P_SPINS(d),XS(H)::S(G)
- Q(c);P_SPINS(d)::QAR(C)+S(H),DCHECK,XQ(c)
- S(j);N_GUARD,SBLOCK::S(G)
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).