MESON Chess Problem Database
Problem Display
PID: 245424 (2Nb4/K2Q1n2/p1ppp3/r1Bkn2R/2Rp2r1/3B4/2Nq4/8 w - - 0 1)
Pankratiev, Aleksandr Nikolaevich
64 Shakhmatnoe obozrenie, 1991
#2
8 + 12
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qc1
- 2.Sb4#
- 1...Qe3
- 2.Sb4#
- 1...Qb4
- 2.Sxb4#
- 1...Qf4
- 2.Sb4#
- 1...Qg5
- 2.Sb4#
- 1...Qh6
- 2.Sb4#
- 1...Qd1
- 2.Sb4#
- 1...Qe2
- 2.Sb4#
- 1...Qf2
- 2.Sb4#
- 1...Qg2
- 2.Sb4#
- 1...Qh2
- 2.Sb4#
- 1...Bh4
- 2.Sb6#
- 1...Bg5
- 2.Sb6#
- 1...Bb6+
- 2.Sxb6#
- 1...Bf6
- 2.Sb6#
- 1...Bc7
- 2.Se7#
- 1...Be7
- 2.Sb6#
- 2.Sxe7#
- 1...Sg5
- 2.Qxd6#
- 1...Sh6
- 2.Qxd6#
- 1...Sh8
- 2.Qxd6#
- 1...Qc1
- Tries
- 1.Bb4?
- threat
- 2.Qxc6#
- 1...Bb6+
- 2.Sxb6#
- 1...Rg5
- 2.Rxd4#
- 1...Rc5
- 2.Rxc5#
- 1...Bg5
- 2.Sb6#
- 1...Sg5
- 2.Qxd6#
- 1...c5
- 2.Qb7#
- 1...Qg5!
- threat
- 1.Bxd4?
- threat
- 2.Qxc6#
- 1...Bb6+
- 2.Sxb6#
- 1...Qg5
- 2.Sb4#
- 1...Rc5
- 2.Rxc5#
- 1...Bg5
- 2.Sb6#
- 1...Sg5
- 2.Qxd6#
- 1...c5
- 2.Qb7#
- 1...Rg5!
- threat
- 1.Bb6?
- threat
- 2.Qxc6#
- 1...Bxb6+
- 2.Sxb6#
- 1...Qg5
- 2.Sb4#
- 1...Rg5
- 2.Rxd4#
- 1...Rc5
- 2.Rxc5#
- 1...Sg5
- 2.Qxd6#
- 1...c5
- 2.Qb7#
- 1...Bg5!
- threat
- 1.Bxd6?
- threat
- 2.Qxc6#
- 1...Bb6+
- 2.Sxb6#
- 1...Bg5
- 2.Sb6#
- 1...Qg5
- 2.Sb4#
- 1...Rg5
- 2.Rxd4#
- 1...Rc5
- 2.Rxc5#
- 1...c5
- 2.Qb7#
- 1...Sg5!
- threat
- 1.Rxe5+?
- 1...Sxe5
- 2.Qxd6#
- 1...Kxe5!
- 1...Sxe5
- 1.Qxd8?
- threat
- 2.Sb6#
- 2.Se7#
- 1...Qb4
- 2.Sxb4#
- 2.Se7#
- 1...Qg5
- 2.Sb4#
- 2.Sb6#
- 1...Rb5
- 2.Se7#
- 1...Qxd3!
- threat
- 1.Bb4?
- Keys
- 1.Ba3!
- threat
- 2.Qxc6#
- 1...Bb6+
- 2.Sxb6#
- 1...Qg5
- 2.Sb4#
- 1...Rg5
- 2.Rxd4#
- 1...Rc5
- 2.Rxc5#
- 1...Bg5
- 2.Sb6#
- 1...Sg5
- 2.Qxd6#
- 1...c5
- 2.Qb7#
- threat
- 1.Ba3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 15
- Sets
- Q(a);N_GUARD::S(A)
- Q(a);N_GUARD::S(A),XQ(a)
- Q(a);N_GUARD,N_SPINS(f)::S(A)
- B(l);N_GUARD::S(H)
- B(l);N_GUARD,N_SPINS(f)::S(H)
- B(l);CHECK,N_GUARD::S(H),XB(l)
- S(k);N_GUARD,N_SPINS(f)::QAR1(G),XP(i)
- S(k);N_GUARD::QAR1(G),XP(i)
- Tries
- Try
- B(D);
- Threat
- QAB1(G),XP(h)
- Vars
- B(l);CHECK,N_GUARD::S(H),XB(l)
- R(c);N_GUARD,N_SPINS(f)::R1(C),XP(b)
- R(d);N_GUARD::R1(C),XR(d)
- B(l);N_GUARD,N_SPINS(f)::S(H)
- S(k);N_GUARD,N_SPINS(f)::QAR1(G),XP(i)
- P(h);OGATEB::QAB(G)
- Refutation
- Q(a);N_SPINS(f)
- Try
- B(D);XP(b)
- Threat
- QAB1(G),XP(h)
- Vars
- B(l);CHECK,N_GUARD::S(H),XB(l)
- Q(a);N_GUARD,N_SPINS(f)::S(A)
- R(d);N_GUARD::R1(C),XR(d)
- B(l);N_GUARD,N_SPINS(f)::S(H)
- S(k);N_GUARD,N_SPINS(f)::QAR1(G),XP(i)
- P(h);OGATEB::QAB(G)
- Refutation
- R(c);N_SPINS(f)
- Try
- B(D);
- Threat
- QAB1(G),XP(h)
- Vars
- B(l);CHECK,XB(D)::S(H),XB(l)
- Q(a);N_GUARD,N_SPINS(f)::S(A)
- R(c);N_GUARD,N_SPINS(f)::R1(C),XP(b)
- R(d);N_GUARD::R1(C),XR(d)
- S(k);N_GUARD,N_SPINS(f)::QAR1(G),XP(i)
- P(h);OGATEB::QAB(G)
- Refutation
- B(l);N_SPINS(f)
- Try
- B(D);XP(i)
- Threat
- QAB1(G),XP(h)
- Vars
- B(l);CHECK,N_GUARD::S(H),XB(l)
- B(l);N_GUARD,N_SPINS(f)::S(H)
- Q(a);N_GUARD,N_SPINS(f)::S(A)
- R(c);N_GUARD,N_SPINS(f)::R1(C),XP(b)
- R(d);N_GUARD::R1(C),XR(d)
- P(h);OGATEB::QAB(G)
- Refutation
- S(k);N_SPINS(f)
- Try
- R(E);CHECK,XS(f)
- Vars
- S(k);XR(E)::QAR1(G),XP(i)
- Refutation
- K(e);N_SPINP(i),P-FLIGHT,XR(E)
- Try
- Q(G);XB(l)
- Threat
- DUALS(2)
- Vars
- R(d);::S(H)
- Refutation
- Q(a);XB(B)
- Try
- Actual
- B(D);
- Threat
- QAB1(G),XP(h)
- Vars
- B(l);CHECK,N_GUARD::S(H),XB(l)
- Q(a);N_GUARD,N_SPINS(f)::S(A)
- R(c);N_GUARD,N_SPINS(f)::R1(C),XP(b)
- R(d);N_GUARD::R1(C),XR(d)
- B(l);N_GUARD,N_SPINS(f)::S(H)
- S(k);N_GUARD,N_SPINS(f)::QAR1(G),XP(i)
- P(h);OGATEB::QAB(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).