MESON Chess Problem Database
Problem Display
PID: 79909 (7N/2bpnK2/b3p2R/1p2k1p1/1Q2B1P1/B5P1/2p1p3/q2R4 w - - 0 1)
Aloni, Yoel
2nd Place, Tel Aviv, 2008
#2
9 + 11
| 721 | Variantim | 2008 |
| 15148 | Sadier Collection | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Qb2
- 2.Bxb2#
- 1...Qd4
- 2.Qxd4#
- 1...Qb1
- 2.Qd4#
- 1...Qc1
- 2.Qd4#
- 1...Qa2
- 2.Qd4#
- 1...Qxa3
- 2.Qd4#
- 1...Sd5
- 2.Sg6#
- 1...Sf5
- 2.Sg6#
- 1...Sc6
- 2.Sg6#
- 1...Sg6
- 2.Sxg6#
- 1...Sc8
- 2.Sg6#
- 1...Sg8
- 2.Sg6#
- 1...d5
- 2.Rxe6#
- 1...d6
- 2.Rxe6#
- 1...Qb2
- Tries
- 1.Kg7?
- threat
- 2.Sf7#
- 1...Qd4
- 2.Qxd4#
- 1...Sf5+!
- threat
- 1.Ke8?
- threat
- 2.Sf7#
- 1...Qd4
- 2.Qxd4#
- 1...Sg6!
- threat
- 1.Kf8?
- threat
- 2.Sf7#
- 1...Qd4
- 2.Qxd4#
- 1...Sg6+!
- threat
- 1.Bh1?
- threat
- 2.Qe4#
- 1...e1Q
- 2.Qxe1#
- 1...e1R
- 2.Qxe1#
- 1...Qd4
- 2.Qxd4#
- 1...d5
- 2.Rxe6#
- 1...Bb7!
- threat
- 1.Bxc2?
- threat
- 2.Qe4#
- 1...Qd4
- 2.Qxd4#
- 1...e1Q
- 2.Qxe1#
- 1...e1R
- 2.Qxe1#
- 1...d5
- 2.Rxe6#
- 1...Bb7!
- threat
- 1.Bg2?
- threat
- 2.Qe4#
- 1...e1Q
- 2.Qxe1#
- 1...e1R
- 2.Qxe1#
- 1...Qd4
- 2.Qxd4#
- 1...d5
- 2.Rxe6#
- 1...Bb7!
- threat
- 1.Bf3?
- threat
- 2.Qe4#
- 1...e1Q
- 2.Qxe1#
- 1...e1R
- 2.Qxe1#
- 1...Qd4
- 2.Qxd4#
- 1...d5
- 2.Rxe6#
- 1...Bb7!
- threat
- 1.Bd5?
- threat
- 2.Qe4#
- 1...Sxd5
- 2.Sg6#
- 1...exd5
- 2.Qxe7#
- 1...Qd4
- 2.Qxd4#
- 1...e1Q
- 2.Qxe1#
- 1...e1R
- 2.Qxe1#
- 1...Qxa3!
- threat
- 1.Bf5?
- threat
- 2.Qe4#
- 1...Sxf5
- 2.Sg6#
- 1...exf5
- 2.Qxe7#
- 1...Qd4
- 2.Qxd4#
- 1...e1Q
- 2.Qxe1#
- 1...e1R
- 2.Qxe1#
- 1...d5
- 2.Rxe6#
- 1...Bb7!
- threat
- 1.Bb7?
- threat
- 2.Qe4#
- 1...e1Q
- 2.Qxe1#
- 1...e1R
- 2.Qxe1#
- 1...Qd4
- 2.Qxd4#
- 1...Sd5
- 2.Sg6#
- 1...Sc6
- 2.Sg6#
- 1...d5
- 2.Rxe6#
- 1...Bxb7!
- threat
- 1.Bh7?
- threat
- 2.Qe4#
- 1...Qd4
- 2.Qxd4#
- 1...e1Q
- 2.Qxe1#
- 1...e1R
- 2.Qxe1#
- 1...Sf5
- 2.Sg6#
- 1...Sg6
- 2.Sxg6#
- 1...d5
- 2.Rxe6#
- 1...Bb7!
- threat
- 1.Ba8?
- threat
- 2.Qe4#
- 1...e1Q
- 2.Qxe1#
- 1...e1R
- 2.Qxe1#
- 1...Qd4
- 2.Qxd4#
- 1...Sd5
- 2.Sg6#
- 1...Sc6
- 2.Sg6#
- 1...d5
- 2.Rxe6#
- 1...Bb7!
- threat
- 1.Rd5+?
- 1...Sxd5
- 2.Sg6#
- 1...exd5!
- 1...Sxd5
- 1.Rxd7?
- threat
- 2.Rxe6#
- 1...Qa2
- 2.Qd4#
- 1...Sg6
- 2.Sxg6#
- 1...Qf1+!
- threat
- 1.Kg7?
- Keys
- 1.Bc6!
- threat
- 2.Qe4#
- 1...Sxc6
- 2.Sg6#
- 1...dxc6
- 2.Rxe6#
- 1...e1Q
- 2.Qxe1#
- 1...e1R
- 2.Qxe1#
- 1...Qd4
- 2.Qxd4#
- 1...Sd5
- 2.Sg6#
- 1...d5
- 2.Rxe6#
- threat
- 1.Bc6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 10
- Sets
- Q(a);N_GUARD::B(B),XQ(a)
- Q(a);N_GUARD::QAB1(D),XQ(a)
- Q(a);N_GUARD::QAB1(D)
- Q(a);N_GUARD,XB(B)::QAB1(D)
- S(k);N_GUARD::S(I)
- S(k);N_GUARD::S(I),XS(k)
- P(j);N_GUARD::R1(G),XP(h)
- Tries
- Try
- K(H);P-FLIGHT
- Threat
- S(I)
- Vars
- Q(a);N_GUARD::QAB1(D),XQ(a)
- Refutation
- S(k);CHECK
- Try
- K(H);S_FLIGHT
- Threat
- S(I)
- Vars
- Q(a);N_GUARD::QAB1(D),XQ(a)
- Refutation
- S(k);
- Try
- K(H);P-FLIGHT
- Threat
- S(I)
- Vars
- Q(a);N_GUARD::QAB1(D),XQ(a)
- Refutation
- S(k);CHECK
- Try
- B(E);
- Threat
- QAR1(D)
- Vars
- P(c);OGATEB::QAR(D),XQ(c)
- P(c);OGATEB::QAR(D),XR(c)
- Q(a);N_GUARD::QAB1(D),XQ(a)
- P(j);N_GUARD::R1(G),XP(h)
- Refutation
- B(g);
- Try
- B(E);XP(b)
- Threat
- QAR1(D)
- Vars
- Q(a);N_GUARD::QAB1(D),XQ(a)
- P(c);OGATEB::QAR(D),XQ(c)
- P(c);OGATEB::QAR(D),XR(c)
- P(j);N_GUARD::R1(G),XP(h)
- Refutation
- B(g);
- Try
- B(E);
- Threat
- QAR1(D)
- Vars
- P(c);OGATEB::QAR(D),XQ(c)
- P(c);OGATEB::QAR(D),XR(c)
- Q(a);N_GUARD::QAB1(D),XQ(a)
- P(j);N_GUARD::R1(G),XP(h)
- Refutation
- B(g);
- Try
- B(E);
- Threat
- QAR1(D)
- Vars
- P(c);OGATEB::QAR(D),XQ(c)
- P(c);OGATEB::QAR(D),XR(c)
- Q(a);N_GUARD::QAB1(D),XQ(a)
- P(j);N_GUARD::R1(G),XP(h)
- Refutation
- B(g);
- Try
- B(E);
- Threat
- QAR1(D)
- Vars
- S(k);N_GUARD,XB(E)::S(I)
- P(h);OGATEB,XB(E)::QAR2(D),XS(k)
- Q(a);N_GUARD::QAB1(D),XQ(a)
- P(c);OGATEB::QAR(D),XQ(c)
- P(c);OGATEB::QAR(D),XR(c)
- Refutation
- Q(a);XB(B)
- Try
- B(E);
- Threat
- QAR1(D)
- Vars
- S(k);N_GUARD,XB(E)::S(I)
- P(h);OGATEB,XB(E)::QAR2(D),XS(k)
- Q(a);N_GUARD::QAB1(D),XQ(a)
- P(c);OGATEB::QAR(D),XQ(c)
- P(c);OGATEB::QAR(D),XR(c)
- P(j);N_GUARD::R1(G),XP(h)
- Refutation
- B(g);
- Try
- B(E);
- Threat
- QAR1(D)
- Vars
- P(c);OGATEB::QAR(D),XQ(c)
- P(c);OGATEB::QAR(D),XR(c)
- Q(a);N_GUARD::QAB1(D),XQ(a)
- S(k);N_GUARD::S(I)
- P(j);N_GUARD::R1(G),XP(h)
- Refutation
- B(g);XB(E)
- Try
- B(E);
- Threat
- QAR1(D)
- Vars
- Q(a);N_GUARD::QAB1(D),XQ(a)
- P(c);OGATEB::QAR(D),XQ(c)
- P(c);OGATEB::QAR(D),XR(c)
- S(k);N_GUARD::S(I)
- S(k);N_GUARD::S(I),XS(k)
- P(j);N_GUARD::R1(G),XP(h)
- Refutation
- B(g);
- Try
- B(E);
- Threat
- QAR1(D)
- Vars
- P(c);OGATEB::QAR(D),XQ(c)
- P(c);OGATEB::QAR(D),XR(c)
- Q(a);N_GUARD::QAB1(D),XQ(a)
- S(k);N_GUARD::S(I)
- P(j);N_GUARD::R1(G),XP(h)
- Refutation
- B(g);
- Try
- R(A);CHECK
- Vars
- S(k);XR(A)::S(I)
- Refutation
- P(h);XR(A)
- Try
- R(A);XP(j)
- Threat
- R1(G),XP(h)
- Vars
- Q(a);N_GUARD::QAB1(D)
- S(k);N_GUARD::S(I),XS(k)
- Refutation
- Q(a);CHECK
- Try
- Actual
- B(E);
- Threat
- QAR1(D)
- Vars
- S(k);N_GUARD,XB(E)::S(I)
- P(j);N_GUARD,XB(E)::R1(G),XP(h)
- P(c);OGATEB::QAR(D),XQ(c)
- P(c);OGATEB::QAR(D),XR(c)
- Q(a);N_GUARD::QAB1(D),XQ(a)
- S(k);N_GUARD::S(I)
- P(j);N_GUARD::R1(G),XP(h)
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).