MESON Chess Problem Database
Problem Display
PID: 81606 (b6b/2Q3Np/1p1P1B1p/1K1k2n1/1p2NP2/2p2p2/3nR1B1/7R w - - 0 1)
Guida, Marco
The Problemist, 2008
#2
10 + 11
SOLUTION
- SOUND
- Sets
- 1...Bc6+
- 2.Qxc6#
- 1...Bb7
- 2.Qxb7#
- 1...Sb1
- 2.Qc4#
- 1...Sf1
- 2.Qc4#
- 1...Sb3
- 2.Qc4#
- 1...Sc4
- 2.Qxc4#
- 1...Sh3
- 2.Qf7#
- 1...Sf7
- 2.Qxf7#
- 1...fxe2
- 2.Sxc3#
- 1...f2
- 2.Sxc3#
- 1...b3
- 2.Sxc3#
- 1...Bc6+
- Tries
- 1.Be5?
- threat
- 2.Sf6#
- 1...Bc6+
- 2.Qxc6#
- 1...Sdxe4
- 2.Qc4#
- 1...Sgxe4
- 2.Qf7#
- 1...Bxg7!
- threat
- 1.Rd1?
- threat
- 2.Qc4#
- 1...Bc6+
- 2.Qxc6#
- 1...Sxe4!
- threat
- 1.Rh5?
- threat
- 2.Qf7#
- 1...Bc6+
- 2.Qxc6#
- 1...Sxe4!
- threat
- 1.Rxd2+?
- 1...cxd2
- 2.Qc4#
- 1...Kxe4!
- 1...cxd2
- 1.Qxc3?
- threat
- 2.Qxd2#
- 2.Qd4#
- 2.Qe5#
- 2.Qd3#
- 1...Bc6+
- 2.Qxc6#
- 1...Bxg7
- 2.Qe5#
- 1...Sdxe4
- 2.Qd4#
- 2.Qe5#
- 2.Qd3#
- 1...Sgxe4
- 2.Qd4#
- 2.Qe5#
- 2.Qd3#
- 1...Sb1
- 2.Qd4#
- 2.Qe5#
- 2.Qb3#
- 2.Qd3#
- 2.Qc4#
- 1...Sf1
- 2.Qd4#
- 2.Qe5#
- 2.Qb3#
- 2.Qd3#
- 2.Qc4#
- 1...Sb3
- 2.Qe5#
- 2.Qxb3#
- 2.Qc4#
- 1...Sc4
- 2.Qd4#
- 2.Qd3#
- 2.Qxc4#
- 1...Se6
- 2.Qe5#
- 1...Sf7
- 2.Qxd2#
- 2.Qd4#
- 2.Qd3#
- 1...bxc3!
- threat
- 1.Qf7+?
- 1...Se6
- 2.Rh5#
- 2.Qxe6#
- 1...Sxf7!
- 1...Se6
- 1.Qc8?
- threat
- 2.Qf5#
- 2.Qxa8#
- 1...Bc6+
- 2.Qxc6#
- 1...Bxg7
- 2.Qf5#
- 1...Sgxe4
- 2.Qe6#
- 1...Sc4
- 2.Qxc4#
- 2.Qxa8#
- 1...Bb7
- 2.Qf5#
- 2.Qxb7#
- 1...Se6
- 2.Qxe6#
- 2.Qxa8#
- 1...Sf7
- 2.Qe6#
- 2.Qxa8#
- 1...Sdxe4!
- threat
- 1.fxg5?
- threat
- 2.Qf7#
- 1...Bc6+
- 2.Qxc6#
- 1...Sxe4!
- threat
- 1.d7?
- threat
- 2.Qe5#
- 2.Qd6#
- 2.d8Q#
- 2.d8R#
- 1...Bc6+
- 2.Qxc6#
- 1...Bxg7
- 2.Qe5#
- 2.Qd6#
- 1...Sdxe4
- 2.Qe5#
- 1...Sgxe4
- 2.Qe5#
- 1...fxe2
- 2.Sxc3#
- 2.Qe5#
- 2.Qd6#
- 2.d8Q#
- 2.d8R#
- 1...fxg2
- 2.Qe5#
- 2.Qd6#
- 2.d8Q#
- 2.d8R#
- 1...Sc4
- 2.Qxc4#
- 1...Bb7
- 2.Qe5#
- 2.Qd6#
- 2.Qxb7#
- 2.d8Q#
- 2.d8R#
- 1...Sb1
- 2.Qe5#
- 2.Qd6#
- 2.Qc4#
- 2.d8Q#
- 2.d8R#
- 1...Sf1
- 2.Qe5#
- 2.Qd6#
- 2.Qc4#
- 2.d8Q#
- 2.d8R#
- 1...Sb3
- 2.Qe5#
- 2.Qd6#
- 2.Qc4#
- 2.d8Q#
- 2.d8R#
- 1...Sh3
- 2.Qe5#
- 2.Qd6#
- 2.d8Q#
- 2.d8R#
- 1...Se6
- 2.Qe5#
- 2.Qd6#
- 1...c2
- 2.Qe5#
- 2.Qd6#
- 2.d8Q#
- 2.d8R#
- 1...f2
- 2.Sxc3#
- 2.Qe5#
- 2.Qd6#
- 2.d8Q#
- 2.d8R#
- 1...b3
- 2.Sxc3#
- 2.Qe5#
- 2.Qd6#
- 2.d8Q#
- 2.d8R#
- 1...h5
- 2.Qe5#
- 2.Qd6#
- 2.d8Q#
- 2.d8R#
- 1...Sf7!
- threat
- 1.Be5?
- Keys
- 1.Bxf3!
- threat
- 2.Sxc3#
- 1...Bc6+
- 2.Qxc6#
- 1...Sdxf3
- 2.Qc4#
- 1...Sdxe4
- 2.Rd1#
- 1...Sgxf3
- 2.Qf7#
- 1...Sgxe4
- 2.Rh5#
- 1...c2
- 2.Sc3#
- 2.Rxd2#
- threat
- 1.Bxf3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 10
- Sets
- B(j);CHECK,N_GUARD::QAB1(I),XB(j)
- B(j);N_GUARD::QAB(I),XB(j)
- S(a);N_GUARD::QAB1(I)
- S(a);N_GUARD::QAB1(I),XS(a)
- S(f);N_GUARD::QAB(I)
- S(f);N_GUARD::QAB(I),XS(f)
- P(c);XR(B)::B(C)+S(D),DCHECK,XP(b)
- P(c);::B(C)+S(D),DCHECK,XP(b)
- P(d);N_GUARD::S(D),XP(b)
- Tries
- Try
- B(H);
- Threat
- S(D)
- Vars
- B(j);CHECK,N_GUARD::QAB1(I),XB(j)
- S(a);N_GUARD,XS(D)::QAB1(I)
- S(f);N_GUARD,XS(D)::QAB(I)
- Refutation
- B(k);XS(J)
- Try
- R(A);P_PINS(a)
- Threat
- QAB1(I)
- Vars
- B(j);CHECK,N_GUARD::QAB1(I),XB(j)
- Refutation
- S(f);XS(D)
- Try
- R(A);P_PINS(f)
- Threat
- QAB(I)
- Vars
- B(j);CHECK,N_GUARD::QAB1(I),XB(j)
- Refutation
- S(a);XS(D)
- Try
- R(B);CHECK,XS(a)
- Vars
- P(b);XR(B)::QAB1(I)
- Refutation
- K(e);P_SPINP(c),S_FLIGHT,XS(D)
- Try
- Q(I);XP(b)
- Threat
- DUALS(4)
- Vars
- B(j);CHECK,N_GUARD::QAB1(I),XB(j)
- B(k);XS(J)::QAR1(I)
- S(f);::QAR1(I)
- Refutation
- P(d);XQ(I)
- Try
- Q(I);CHECK
- Refutation
- S(f);XQ(I)
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- B(j);CHECK,N_GUARD::QAB1(I),XB(j)
- B(k);XS(J)::QAR2(I)
- S(f);N_GUARD,XS(D)::QAB1(I)
- Refutation
- S(a);XS(D)
- Try
- P(E);XS(f)
- Threat
- QAB(I)
- Vars
- B(j);CHECK,N_GUARD::QAB1(I),XB(j)
- Refutation
- S(a);XS(D)
- Try
- P(G);
- Threat
- DUALS(4)
- Vars
- B(j);CHECK,N_GUARD::QAB1(I),XB(j)
- S(a);XS(D)::QAR1(I)
- S(f);XS(D)::QAR1(I)
- S(a);N_GUARD::QAB1(I),XS(a)
- Refutation
- S(f);
- Try
- Actual
- B(C);XP(c)
- Threat
- B(C)+S(D),DCHECK,XP(b)
- Vars
- B(j);CHECK,N_GUARD::QAB1(I),XB(j)
- S(a);N_GUARD,XB(C)::QAB1(I)
- S(a);OGATEB,P_SPINS(a),XS(D)::R(A)
- S(f);N_GUARD,XB(C)::QAB(I)
- S(f);OGATEB,P_SPINS(f),XS(D)::R(A)
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).