MESON Chess Problem Database
Problem Display
PID: 78434 (1N2r3/Qp1R4/1p4q1/1K1PR2p/2Pk1Bn1/2pP4/5P2/2N5 w - - 0 1)
Grossi, Damien
Parallele 50, 1948
#2
11 + 8
SOLUTION
- SOUND
- Sets
- 1...Qxd3
- 2.Sb3#
- 2.Qxb6#
- 1...Qe4
- 2.Qxb6#
- 1...Qf5
- 2.Qxb6#
- 1...Qf7
- 2.Qxb6#
- 1...Qh7
- 2.Qxb6#
- 1...Qg5
- 2.Qxb6#
- 1...Qc6+
- 2.dxc6#
- 1...Qe6
- 2.dxe6#
- 1...Qg7
- 2.Qxb6#
- 1...Qg8
- 2.Qxb6#
- 1...Re6
- 2.dxe6#
- 1...Se3
- 2.fxe3#
- 1...Sxe5
- 2.Be3#
- 1...Sf6
- 2.Qxb6#
- 1...c2
- 2.Qa1#
- 1...Qxd3
- Tries
- 1.Sc6+?
- 1...Qxc6+
- 2.dxc6#
- 1...bxc6+!
- 1...Qxc6+
- 1.Re4+?
- 1...Qxe4
- 2.Qxb6#
- 1...Rxe4!
- 1...Qxe4
- 1.Re6?
- threat
- 2.Qxb6#
- 1...Qxe6
- 2.dxe6#
- 1...Rxe6
- 2.dxe6#
- 1...c2
- 2.Qa1#
- 1...Rc8!
- threat
- 1.Rxe8?
- 1...Qc6+
- 2.dxc6#
- 1...Qxd3
- 2.Sb3#
- 2.Qxb6#
- 1...Qxe8
- 2.Qxb6#
- 1...Sxf2
- 2.Be3#
- 1...c2
- 2.Qa1#
- 1...Qe4
- 2.Rxe4#
- 2.Qxb6#
- 1...Qf5
- 2.Qxb6#
- 1...Qf7
- 2.Re4#
- 2.Qxb6#
- 1...Qh7
- 2.Qxb6#
- 1...Qg5
- 2.Re4#
- 2.Qxb6#
- 1...Qd6
- 2.Re4#
- 1...Qe6
- 2.dxe6#
- 1...Qf6
- 2.Re4#
- 1...Qh6
- 2.Re4#
- 1...Qg7
- 2.Re4#
- 2.Qxb6#
- 1...Qg8
- 2.Re4#
- 2.Qxb6#
- 1...Sh2
- 2.Be3#
- 2.Be5#
- 1...Se3
- 2.Bxe3#
- 2.Be5#
- 2.fxe3#
- 1...Se5
- 2.Be3#
- 2.Bxe5#
- 1...Sf6
- 2.Be3#
- 2.Be5#
- 2.Qxb6#
- 1...Sh6
- 2.Be3#
- 2.Be5#
- 1...h4!
- 1...Qc6+
- 1.c5?
- threat
- 2.Qa4#
- 1...Qc6+
- 2.dxc6#
- 1...Sxe5
- 2.Be3#
- 1...bxc5
- 2.Qxc5#
- 1...c2
- 2.Qa1#
- 1...Se3
- 2.fxe3#
- 1...Qxd3+!
- threat
- 1.d6?
- threat
- 2.Rd5#
- 2.Qxb6#
- 1...Qxd3
- 2.Sb3#
- 2.Qxb6#
- 1...Qxd6
- 2.Rxd6#
- 2.Qxb6#
- 1...Sxe5
- 2.Be3#
- 2.Qxb6#
- 1...c2
- 2.Qa1#
- 1...Rc8
- 2.Rd5#
- 1...Qe4
- 2.Qxb6#
- 1...Qf5
- 2.Qxb6#
- 1...Qf7
- 2.Qxb6#
- 1...Qg5
- 2.Qxb6#
- 1...Qe6
- 2.Qxb6#
- 1...Qg8
- 2.Qxb6#
- 1...Se3
- 2.Qxb6#
- 2.fxe3#
- 1...Sf6
- 2.Qxb6#
- 1...Rxe5+!
- threat
- 1.Sc6+?
- Keys
- 1.Qa4!
- threat
- 2.c5#
- 1...Qc6+
- 2.dxc6#
- 1...Qxd3
- 2.Sb3#
- 1...Sxe5
- 2.Be3#
- 1...c2
- 2.Qa1#
- 1...Se3
- 2.fxe3#
- threat
- 1.Qa4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 10
- Sets
- Q(f);N_GUARD::QAB(I),XP(e)
- Q(f);CHECK,OGATE::R(J)+P(G),XQ(f)
- Q(f);OGATE::R(J)+P(G),XQ(f)
- R(h);OGATE::R(J)+P(G),XR(h)
- S(c);OGATE::P(B),XS(c)
- S(c);N_GUARD,SBLOCK,XR(H)::B(E)
- S(c);S_CUTQ(f)::QAB(I),XP(e)
- P(a);OGATEB::QAB(I)
- Tries
- Try
- S(K);CHECK
- Vars
- Q(f);CHECK,OGATE,XS(K)::R(J)+P(G),XQ(f)
- Refutation
- P(g);CHECK,XS(K)
- Try
- R(H);CHECK
- Vars
- Q(f);XR(H)::QAB(I),XP(e)
- Refutation
- R(h);XR(H)
- Try
- R(H);
- Threat
- QAB(I),XP(e)
- Vars
- Q(f);OGATE,XR(H)::R(J)+P(G),XQ(f)
- R(h);OGATE,XR(H)::R(J)+P(G),XR(h)
- P(a);OGATEB::QAB(I)
- Refutation
- R(h);
- Try
- R(H);XR(h)
- Vars
- Q(f);CHECK,OGATE::R(J)+P(G),XQ(f)
- Q(f);N_GUARD,P_PINR(J),XR(H)::QAB(I),XP(e)
- S(c);N_GUARD,XP(B)::B(E)
- P(a);OGATEB::QAB(I)
- Q(f);N_GUARD,P_PINP(G)::QAB(I),XP(e)
- Q(f);N_GUARD::QAB(I),XP(e)
- Q(f);N_GUARD::R1(H)
- Q(f);OGATE::R(J)+P(G),XQ(f)
- Refutation
- P(d);
- Try
- P(D);N_PINP(e)
- Threat
- QAR(I)
- Vars
- Q(f);CHECK,OGATE::R(J)+P(G),XQ(f)
- S(c);N_GUARD,SBLOCK,XR(H)::B(E)
- P(e);OGATE,P_SPINP(e),XP(D)::QAB1(I),XP(e)
- P(a);OGATEB::QAB(I)
- S(c);OGATE::P(B),XS(c)
- Refutation
- Q(f);CHECK,XP(C)
- Try
- P(G);
- Threat
- DUALS(2)
- Vars
- P(a);OGATEB::QAB(I)
- R(h);::R1(H)
- Q(f);::QAB(I),XP(e)
- Q(f);P_PINR(H)::QAB(I),XP(e)
- S(c);::QAB(I),XP(e)
- Refutation
- R(h);CHECK,XR(H)
- Try
- Actual
- Q(I);N_PINP(e)
- Threat
- QAR(I)+P(D)
- Vars
- Q(f);CHECK,OGATE::R(J)+P(G),XQ(f)
- Q(f);P_PINP(D),SBLOCK,XP(C)::S(A)
- S(c);N_GUARD,SBLOCK,XR(H)::B(E)
- P(a);OGATEB::QAB(I)
- S(c);OGATE::P(B),XS(c)
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).