MESON Chess Problem Database
Problem Display
PID: 146703 (8/4qNpK/2n1B3/4pRp1/R2nkBP1/1r2p2b/2P1Q3/3rbN2 w - - 0 1)
Pankratiev, Aleksandr Nikolaevich
Australian Chess Problem Magazine, 1994
#2
10 + 12
SOLUTION
- SOUND
- Sets
- 1...Qa3
- 2.Sxg5#
- 1...Qb4
- 2.Sxg5#
- 1...Qc5
- 2.Sxg5#
- 1...Qd6
- 2.Sxg5#
- 2.Sxd6#
- 1...Qf6
- 2.Sd6#
- 1...Qf8
- 2.Sxg5#
- 1...Qa7
- 2.Sxg5#
- 2.Sd6#
- 1...Qb7
- 2.Sxg5#
- 2.Sd6#
- 1...Qc7
- 2.Sxg5#
- 1...Qd7
- 2.Sxg5#
- 1...Qe8
- 2.Sxg5#
- 2.Sd6#
- 1...Rb1
- 2.Qxe3#
- 1...Rb2
- 2.Qxe3#
- 1...Rb4
- 2.Qxe3#
- 1...Rb5
- 2.Qxe3#
- 1...Rb6
- 2.Qxe3#
- 1...Rb7
- 2.Qxe3#
- 1...Rb8
- 2.Qxe3#
- 1...Bd2
- 2.Sg3#
- 1...Bc3
- 2.Sg3#
- 2.Qxe3#
- 1...Bg3
- 2.Sxg3#
- 1...Bb4
- 2.Sg3#
- 1...Ba5
- 2.Sg3#
- 1...Bg2
- 2.Qxg2#
- 1...exf4
- 2.Bd5#
- 1...Qa3
- Tries
- 1.Bxe3?
- threat
- 2.Qf3#
- 1...Rxe3
- 2.Qxe3#
- 1...Bxg4
- 2.Qxg4#
- 1...Qb4
- 2.Sxg5#
- 1...Bb4
- 2.Sg3#
- 1...Bg2
- 2.Qxg2#
- 1...Sb4
- 2.Rxe5#
- 1...Rb4!
- threat
- 1.Bg3?
- threat
- 2.Qf3#
- 1...Bxg4
- 2.Qxg4#
- 1...Qb4
- 2.Sxg5#
- 1...Rb4
- 2.Qxe3#
- 1...Bg2
- 2.Qxg2#
- 1...Sb4
- 2.Rxe5#
- 1...Bb4!
- threat
- 1.Bxg5?
- threat
- 2.Qf3#
- 1...Bxg4
- 2.Qxg4#
- 1...Bb4
- 2.Sg3#
- 1...Rb4
- 2.Qxe3#
- 1...Bg2
- 2.Qxg2#
- 1...Sb4
- 2.Rxe5#
- 1...Qb4!
- threat
- 1.Bxe3?
- Keys
- 1.Bh2!
- threat
- 2.Qf3#
- 1...Bxg4
- 2.Qxg4#
- 1...Qb4
- 2.Sxg5#
- 1...Rb4
- 2.Qxe3#
- 1...Bb4
- 2.Sg3#
- 1...Bg2
- 2.Qxg2#
- 1...Sb4
- 2.Rxe5#
- threat
- 1.Bh2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 16
- Sets
- Q(k);N_GUARD::S(I),XP(i)
- Q(k);N_GUARD,N_SPINS(f)::S(I),XP(i)
- Q(k);N_GUARD::S(I)
- R(c);N_GUARD::QAR1(C),XP(d)
- R(c);N_GUARD,N_SPINS(f)::QAR1(C),XP(d)
- B(b);N_GUARD::S(A)
- B(b);N_GUARD::S(A),XB(b)
- B(b);N_GUARD,N_SPINS(f)::S(A)
- B(e);N_GUARD::QAB(C),XB(e)
- P(h);XB(E)::B(H)
- Tries
- Try
- B(E);XP(d)
- Threat
- QAB1(C)
- Vars
- R(c);OGATE,P_SPINR(c),XB(E)::QAR1(C),XR(c)
- B(e);OGATE,XP(F)::QAR2(C),XB(e)
- Q(k);N_GUARD,N_SPINS(f)::S(I),XP(i)
- B(b);N_GUARD,N_SPINS(f)::S(A)
- B(e);N_GUARD::QAB(C),XB(e)
- S(j);N_GUARD,N_SPINS(f)::R1(G),XP(h)
- Refutation
- R(c);N_SPINS(f)
- Try
- B(E);
- Threat
- QAB1(C)
- Vars
- B(e);OGATE,XP(F)::QAR2(C),XB(e)
- Q(k);N_GUARD,N_SPINS(f)::S(I),XP(i)
- R(c);N_GUARD,N_SPINS(f)::QAR1(C),XP(d)
- B(e);N_GUARD::QAB(C),XB(e)
- S(j);N_GUARD,N_SPINS(f)::R1(G),XP(h)
- Refutation
- B(b);N_SPINS(f)
- Try
- B(E);XP(i)
- Threat
- QAB1(C)
- Vars
- B(e);OGATE,XP(F)::QAR2(C),XB(e)
- B(b);N_GUARD,N_SPINS(f)::S(A)
- R(c);N_GUARD,N_SPINS(f)::QAR1(C),XP(d)
- B(e);N_GUARD::QAB(C),XB(e)
- S(j);N_GUARD,N_SPINS(f)::R1(G),XP(h)
- Refutation
- Q(k);N_SPINS(f)
- Try
- Actual
- B(E);
- Threat
- QAB1(C)
- Vars
- B(e);OGATE,XP(F)::QAR2(C),XB(e)
- Q(k);N_GUARD,N_SPINS(f)::S(I),XP(i)
- R(c);N_GUARD,N_SPINS(f)::QAR1(C),XP(d)
- B(b);N_GUARD,N_SPINS(f)::S(A)
- B(e);N_GUARD::QAB(C),XB(e)
- S(j);N_GUARD,N_SPINS(f)::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).