MESON Chess Problem Database
Problem Display
PID: 7618 (8/3pr2b/4P1nr/pKQN2p1/1pNPk1B1/2p1P3/2P1n2b/5q2 w - - 0 1)
Poponin, Vladimir Grigorievich
Rychkov, Vladimir Nikolaevich
1st HM., Chobhan, 1992
#2
9 + 13
SOLUTION
- SOUND
- Sets
- 1...Qg2
- 2.Sf6#
- 1...Qh3
- 2.Sf6#
- 1...Qa1
- 2.Sf6#
- 1...Qb1
- 2.Sf6#
- 1...Qc1
- 2.Sf6#
- 1...Qd1
- 2.Sf6#
- 1...Qe1
- 2.Sf6#
- 1...Qg1
- 2.Sf6#
- 1...Qh1
- 2.Sf6#
- 1...Qf6
- 2.Sxf6#
- 1...Bg1
- 2.Sd6#
- 1...Bf4
- 2.Sf6#
- 1...Bd6
- 2.Sxd6#
- 1...Sxd4+
- 2.Qxd4#
- 1...Sef4
- 2.Sf6#
- 1...Sgf4
- 2.Sd6#
- 1...Se5
- 2.Sd6#
- 1...Qg2
- Tries
- 1.Sxb4?
- threat
- 2.Qd5#
- 1...Sxd4+
- 2.Qxd4#
- 1...dxe6
- 2.Qc6#
- 1...Qf5
- 2.Qxf5#
- 1...Sef4
- 2.Qf5#
- 1...Sgf4
- 2.Qe5#
- 1...d5
- 2.Qxd5#
- 1...axb4!
- threat
- 1.Sf4?
- threat
- 2.Qd5#
- 2.Qf5#
- 1...Sxd4+
- 2.Qxd4#
- 1...Bxf4
- 2.Qf5#
- 1...Sexf4
- 2.Qf5#
- 1...Sgxf4
- 2.Qe5#
- 1...gxf4
- 2.Qf5#
- 1...dxe6
- 2.Qc6#
- 1...Rf7
- 2.Qd5#
- 1...Sg3
- 2.Qd5#
- 1...Sh4
- 2.Qd5#
- 2.Qe5#
- 1...Se5
- 2.Qd5#
- 2.Qxe5#
- 1...Sf8
- 2.Qd5#
- 2.Qe5#
- 1...Sh8
- 2.Qd5#
- 2.Qe5#
- 1...d5
- 2.Qxd5#
- 1...Qxf4!
- threat
- 1.Sc7?
- threat
- 2.Qd5#
- 1...Sxd4+
- 2.Qxd4#
- 1...dxe6
- 2.Qc6#
- 1...Qf5
- 2.Qxf5#
- 1...Sef4
- 2.Qf5#
- 1...Sgf4
- 2.Qe5#
- 1...d5
- 2.Qxd5#
- 1...Bxc7!
- threat
- 1.Sxe7?
- threat
- 2.Qd5#
- 1...Sxd4+
- 2.Qxd4#
- 1...dxe6
- 2.Qc6#
- 1...Qf5
- 2.Qxf5#
- 1...Sef4
- 2.Qf5#
- 1...Sgf4
- 2.Qe5#
- 1...d5
- 2.Qxd5#
- 1...Sxe7!
- threat
- 1.Sxb4?
- Keys
- 1.Sdb6!
- threat
- 2.Qd5#
- 1...Sxd4+
- 2.Qxd4#
- 1...dxe6
- 2.Qc6#
- 1...Qf5
- 2.Qxf5#
- 1...Sef4
- 2.Qf5#
- 1...Sgf4
- 2.Qe5#
- 1...d5
- 2.Qxd5#
- threat
- 1.Sdb6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 3
- REMOVED MATES = 14
- Sets
- Q(a);N_GUARD::S(H)
- Q(a);N_GUARD::S(H),XQ(a)
- B(c);N_GUARD::S(C)
- B(c);S_CUTQ(a)::S(H)
- B(c);N_GUARD::S(C),XB(c)
- S(b);CHECK,OGATE,P_PINS(C),XP(D)::QAR1(G),XS(b)
- S(b);P_PINS(C),S_CUTQ(a)::S(H)
- S(i);S_CUTB(c)::S(C)
- Tries
- Try
- S(H);XP(e)
- Threat
- QAB1(G)
- Vars
- S(b);CHECK,OGATE,P_PINS(C),XP(D)::QAR1(G),XS(b)
- P(k);N_GUARD,XP(I)::QAB(G)
- Q(a);N_GUARD,P_PINQ(G)::QAB1(G),XQ(a)
- S(b);P_PINS(C),S_CUTQ(a)::QAB1(G)
- S(i);N_GUARD,S_CUTB(c)::QAR1(G)
- P(k);::QAB1(G),XP(k)
- Refutation
- P(g);XS(H)
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- S(b);CHECK,OGATE,P_PINS(C),XP(D)::QAR1(G),XS(b)
- B(c);XS(H)::QAB1(G)
- S(b);P_PINS(C),XS(H)::QAB1(G)
- S(i);N_GUARD,XS(H)::QAR1(G)
- P(h);XS(H)::QAB1(G)
- P(k);N_GUARD,XP(I)::QAB(G)
- R(l);::QAB1(G)
- S(b);P_PINS(C)::QAB1(G)
- P(k);::QAB1(G),XP(k)
- Refutation
- Q(a);XS(H)
- Try
- S(H);
- Threat
- QAB1(G)
- Vars
- S(b);CHECK,OGATE,P_PINS(C),XP(D)::QAR1(G),XS(b)
- P(k);N_GUARD,XP(I)::QAB(G)
- Q(a);N_GUARD,P_PINQ(G)::QAB1(G),XQ(a)
- S(b);P_PINS(C),S_CUTQ(a)::QAB1(G)
- S(i);N_GUARD,S_CUTB(c)::QAR1(G)
- P(k);::QAB1(G),XP(k)
- Refutation
- B(c);XS(H)
- Try
- S(H);XR(l)
- Threat
- QAB1(G)
- Vars
- S(b);CHECK,OGATE,P_PINS(C),XP(D)::QAR1(G),XS(b)
- P(k);N_GUARD,XP(I)::QAB(G)
- Q(a);N_GUARD,P_PINQ(G)::QAB1(G),XQ(a)
- S(b);P_PINS(C),S_CUTQ(a)::QAB1(G)
- S(i);N_GUARD,S_CUTB(c)::QAR1(G)
- P(k);::QAB1(G),XP(k)
- Refutation
- S(i);XS(H)
- Try
- Actual
- S(H);
- Threat
- QAB1(G)
- Vars
- S(b);CHECK,OGATE,P_PINS(C),XP(D)::QAR1(G),XS(b)
- P(k);N_GUARD,XP(I)::QAB(G)
- Q(a);N_GUARD,P_PINQ(G)::QAB1(G),XQ(a)
- S(b);P_PINS(C),S_CUTQ(a)::QAB1(G)
- S(i);N_GUARD,S_CUTB(c)::QAR1(G)
- P(k);::QAB1(G),XP(k)
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).