MESON Chess Problem Database
Problem Display
PID: 22308 (4rb2/1p5b/1Q4N1/1BpkBN1R/1p1q1p2/2Pn1P2/5n2/1K1R4 w - - 0 1)
Chimedtseren, Sonomun
Pedagogusok Lapja, 1978
#2
10 + 11
SOLUTION
- SOUND
- Sets
- 1...Qe3
- 2.c4#
- 1...Qxe5
- 2.c4#
- 1...Re7
- 2.Qd6#
- 1...Bd6
- 2.Qxd6#
- 1...Bh6
- 2.Qd6#
- 1...Bg7
- 2.Qd6#
- 1...Sc1
- 2.c4#
- 1...Se1
- 2.c4#
- 1...Sxe5
- 2.Sxf4#
- 1...Qe3
- Tries
- 1.Se3+?
- 1...Qxe3
- 2.c4#
- 1...fxe3!
- 1...Qxe3
- 1.Sxd4?
- threat
- 2.Qxb7#
- 2.c4#
- 1...Rxe5
- 2.Qe6#
- 1...Sxe5
- 2.c4#
- 1...bxc3
- 2.Qxb7#
- 1...cxd4
- 2.c4#
- 1...Re6
- 2.Qxe6#
- 2.c4#
- 1...Re7
- 2.Qd6#
- 2.c4#
- 1...Rb8
- 2.Qe6#
- 2.c4#
- 1...Rc8
- 2.Qe6#
- 2.c4#
- 1...Sb2
- 2.Qxb7#
- 1...c4!
- threat
- 1.Sfe7+?
- 1...Rxe7
- 2.Qd6#
- 1...Bxe7!
- 1...Rxe7
- 1.Bxd4?
- threat
- 2.Se3#
- 2.Sfe7#
- 2.c4#
- 1...Bd6
- 2.Qxd6#
- 1...Re3
- 2.Sxe3#
- 2.Sfe7#
- 2.c4#
- 1...Re5
- 2.c4#
- 1...Re7
- 2.Se3#
- 2.Sfxe7#
- 2.Qd6#
- 2.c4#
- 1...Be7
- 2.Se3#
- 2.Sfxe7#
- 2.c4#
- 1...Sb2
- 2.Se3#
- 2.Sfe7#
- 2.Sxf4#
- 1...Se5
- 2.Sxf4#
- 1...c4
- 2.Se3#
- 2.Sfe7#
- 1...bxc3!
- threat
- 1.Bf6?
- threat
- 2.Se3#
- 2.Sfe7#
- 1...Bd6
- 2.Qxd6#
- 1...Qe3
- 2.Sxe3#
- 2.Sfe7#
- 2.c4#
- 1...Qe5
- 2.c4#
- 1...Re3
- 2.Sxe3#
- 2.Sfe7#
- 1...Re7
- 2.Se3#
- 2.Sfxe7#
- 2.Qd6#
- 1...Be7
- 2.Se3#
- 2.Sfxe7#
- 1...Se5
- 2.Sxf4#
- 1...Re5!
- threat
- 1.Bc7?
- threat
- 2.Se3#
- 2.Sfe7#
- 1...Qxc3
- 2.Sxf4#
- 1...Bd6
- 2.Qxd6#
- 1...Qe3
- 2.Sxe3#
- 2.Sfe7#
- 2.c4#
- 1...Qe5
- 2.c4#
- 1...Re3
- 2.Sxe3#
- 2.Sfe7#
- 1...Re7
- 2.Se3#
- 2.Sfxe7#
- 2.Qd6#
- 1...Be7
- 2.Se3#
- 2.Sfxe7#
- 1...Se5
- 2.Sxf4#
- 1...Re5!
- threat
- 1.Bg7?
- threat
- 2.Se3#
- 2.Sfe7#
- 1...Bd6
- 2.Qxd6#
- 1...Qe3
- 2.Sxe3#
- 2.Sfe7#
- 2.c4#
- 1...Qe5
- 2.c4#
- 1...Re3
- 2.Sxe3#
- 2.Sfe7#
- 1...Re7
- 2.Se3#
- 2.Sfxe7#
- 2.Qd6#
- 1...Be7
- 2.Se3#
- 2.Sfxe7#
- 1...Se5
- 2.Sxf4#
- 1...Re5!
- threat
- 1.Bb8?
- threat
- 2.Se3#
- 2.Sfe7#
- 1...Qxc3
- 2.Sxf4#
- 1...Bd6
- 2.Qxd6#
- 1...Qe3
- 2.Sxe3#
- 2.Sfe7#
- 2.c4#
- 1...Qe5
- 2.c4#
- 1...Re3
- 2.Sxe3#
- 2.Sfe7#
- 1...Re7
- 2.Se3#
- 2.Sfxe7#
- 2.Qd6#
- 1...Be7
- 2.Se3#
- 2.Sfxe7#
- 1...Se5
- 2.Sxf4#
- 1...Re5!
- threat
- 1.Bh8?
- threat
- 2.Se3#
- 2.Sfe7#
- 1...Bd6
- 2.Qxd6#
- 1...Qe3
- 2.Sxe3#
- 2.Sfe7#
- 2.c4#
- 1...Qe5
- 2.c4#
- 1...Re3
- 2.Sxe3#
- 2.Sfe7#
- 1...Re7
- 2.Se3#
- 2.Sfxe7#
- 2.Qd6#
- 1...Be7
- 2.Se3#
- 2.Sfxe7#
- 1...Se5
- 2.Sxf4#
- 1...Re5!
- threat
- 1.Se3+?
- Keys
- 1.Sg7!
- threat
- 2.Qxb7#
- 1...Qxe5
- 2.Sxf4#
- 1...Rxe5
- 2.Qe6#
- 1...Bxg7
- 2.Qd6#
- 1...Sxe5
- 2.c4#
- 1...Re6
- 2.Qxe6#
- 1...Re7
- 2.Qd6#
- 1...Rb8
- 2.Qe6#
- 1...Rc8
- 2.Qe6#
- 1...c4
- 2.Qxd4#
- threat
- 1.Sg7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 5
- REMOVED MATES = 5
- Sets
- Q(d);N_GUARD,P_SPINS(b)::P(C)
- Q(d);N_GUARD,P_SPINS(b),XB(F)::P(C)
- R(j);S_CUTB(k)::QAR1(I)
- B(k);N_GUARD::QAR1(I),XB(k)
- B(k);N_GUARD::QAR1(I)
- S(b);P_SPINQ(d)::P(C)
- S(b);N_GUARD,P_SPINQ(d),SBLOCK,XB(F)::S(J),XP(e)
- Tries
- Try
- S(G);CHECK
- Vars
- Q(d);P_SPINS(b),XS(G)::P(C)
- Refutation
- P(e);XS(G)
- Try
- S(G);XQ(d)
- Threat
- DUALS(2)
- Vars
- R(j);N_GUARD,P_SPINR(j),XB(F)::QAB1(I)
- S(b);P_PINS(J),P_SPINS(b),XB(F)::P(C)
- P(c);XP(C)::QAB(I),XP(h)
- P(f);XS(G)::P(C)
- S(b);P_PINS(J)::QAB(I),XP(h)
- Refutation
- P(f);
- Try
- S(G);CHECK
- Vars
- R(j);XS(G)::QAR1(I)
- Refutation
- B(k);XS(G)
- Try
- B(F);XQ(d)
- Threat
- DUALS(3)
- Vars
- B(k);N_GUARD::QAR1(I),XB(k)
- R(j);::P(C)
- S(b);N_GUARD::S(J),XP(e)
- Refutation
- P(c);XP(C)
- Try
- B(F);
- Threat
- DUALS(2)
- Vars
- B(k);N_GUARD::QAR1(I),XB(k)
- Q(d);N_GUARD,P_SPINS(b)::P(C)
- S(b);N_GUARD,P_SPINQ(d)::S(J),XP(e)
- Refutation
- R(j);
- Try
- B(F);
- Threat
- DUALS(2)
- Vars
- Q(d);N_GUARD,P_SPINS(b),XP(C)::S(J),XP(e)
- B(k);N_GUARD::QAR1(I),XB(k)
- Q(d);N_GUARD,P_SPINS(b)::P(C)
- S(b);N_GUARD,P_SPINQ(d)::S(J),XP(e)
- Refutation
- R(j);
- Try
- B(F);
- Threat
- DUALS(2)
- Vars
- B(k);N_GUARD::QAR1(I),XB(k)
- Q(d);N_GUARD,P_SPINS(b)::P(C)
- S(b);N_GUARD,P_SPINQ(d)::S(J),XP(e)
- Refutation
- R(j);
- Try
- B(F);
- Threat
- DUALS(2)
- Vars
- Q(d);N_GUARD,P_SPINS(b),XP(C)::S(J),XP(e)
- B(k);N_GUARD::QAR1(I),XB(k)
- Q(d);N_GUARD,P_SPINS(b)::P(C)
- S(b);N_GUARD,P_SPINQ(d)::S(J),XP(e)
- Refutation
- R(j);
- Try
- B(F);
- Threat
- DUALS(2)
- Vars
- B(k);N_GUARD::QAR1(I),XB(k)
- Q(d);N_GUARD,P_SPINS(b)::P(C)
- S(b);N_GUARD,P_SPINQ(d)::S(J),XP(e)
- Refutation
- R(j);
- Try
- Actual
- S(G);
- Threat
- QAB(I),XP(h)
- Vars
- Q(d);N_GUARD,P_SPINQ(d),P_SPINS(b),XB(F)::S(J),XP(e)
- R(j);N_GUARD,P_SPINR(j),XB(F)::QAB1(I)
- B(k);N_GUARD,XS(G)::QAR1(I)
- S(b);P_PINS(J),P_SPINQ(d),P_SPINS(b),XB(F)::P(C)
- R(j);N_GUARD::QAB1(I),XR(j)
- R(j);S_CUTB(k)::QAR1(I)
- R(j);N_GUARD::QAB1(I)
- P(f);OGATE::QAR1(I),XQ(d)
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).