MESON Chess Problem Database
Problem Display
PID: 48397 (1B6/8/5P1p/2nBP2K/1rRrqk1N/2p1NPp1/4p1Pn/2Qb1R2 w - - 0 1)
Gulyaev, Aleksandr Pavlovich (aka Grin, AP)
Comm., Maribor Ty., 1929
#2
12 + 11
| 273 | Mat Plus | 1994 |
SOLUTION
- SOUND
- Sets
- 1...Qc2
- 2.Sxc2#
- 1...Qxf3+
- 2.Sg4#
- 1...Qxd5
- 2.Sxd1#
- 2.Sc2#
- 2.Sg4#
- 2.Sxd5#
- 2.Sef5#
- 2.Sg6#
- 1...Qf5+
- 2.Sexf5#
- 1...Qg6+
- 2.Sxg6#
- 1...Qh7
- 2.Sxd1#
- 2.Sc2#
- 2.Sg4#
- 2.Sef5#
- 1...Qxe5+
- 2.Sef5#
- 1...Rd3
- 2.Sg6#
- 1...Rxd5
- 2.Sxd5#
- 2.Sg6#
- 1...Qc2
- Tries
- 1.Sxd1+?
- 1...Qe3
- 2.Qxe3#
- 1...Rd2!
- 1...Qe3
- 1.Sc2+?
- 1...Qe3
- 2.Qxe3#
- 1...Rd2!
- 1...Qe3
- 1.Sg4+?
- 1...Qe3
- 2.Qxe3#
- 1...Rd2!
- 1...Qe3
- 1.Sef5+?
- 1...Qe3
- 2.Qxe3#
- 1...Rd2!
- 1...Qe3
- 1.Bxe4?
- threat
- 2.Sd5#
- 2.Sg6#
- 1...Rxb8
- 2.Sg6#
- 1...Rd2
- 2.Sd5#
- 1...Rd6
- 2.Sg6#
- 1...Rd5
- 2.Sxd5#
- 2.Sg6#
- 1...Sxf3!
- threat
- 1.Rxd4?
- threat
- 2.Sxd1#
- 2.Sc2#
- 2.Sc4#
- 2.Sg4#
- 2.Sef5#
- 2.Sg6#
- 1...Qxd4
- 2.Sg6#
- 1...Rxb8
- 2.Sc4#
- 2.Sg4#
- 2.Sg6#
- 1...Sxf1
- 2.Sxf1#
- 2.Sg6#
- 1...exf1S
- 2.Sxf1#
- 2.Sg6#
- 1...e1Q
- 2.Sg6#
- 1...e1B
- 2.Sg6#
- 1...e1R
- 2.Sg6#
- 1...Rb1
- 2.Sg6#
- 1...Rb2
- 2.Sc2#
- 2.Sg6#
- 1...Rc4
- 2.Sxd1#
- 2.Sc2#
- 2.Sxc4#
- 2.Sg4#
- 2.Sef5#
- 2.Sg6#
- 2.e6#
- 1...Bc2
- 2.Sd1#
- 2.Sxc2#
- 2.Sc4#
- 2.Sg4#
- 2.Sef5#
- 2.Sg6#
- 1...Bb3
- 2.Sd1#
- 2.Sc2#
- 2.Sc4#
- 2.Sg4#
- 2.Sef5#
- 2.Sg6#
- 1...Ba4
- 2.Sd1#
- 2.Sc2#
- 2.Sc4#
- 2.Sg4#
- 2.Sef5#
- 2.Sg6#
- 1...Sg4
- 2.Sxg4#
- 2.Sg6#
- 1...Sb3
- 2.Sg6#
- 1...Sd3
- 2.Sg6#
- 1...c2
- 2.Sxd1#
- 2.Sxc2#
- 2.Sc4#
- 2.Sg4#
- 2.Sef5#
- 2.Sg6#
- 1...Rxd4!
- threat
- 1.e6+?
- 1...Qe5+
- 2.Sef5#
- 1...Rxb8!
- 1...Qe5+
- 1.Sxd1+?
- Keys
- 1.Bb7!
- threat
- 2.Sd5#
- 1...Qxf3+
- 2.Sg4#
- 1...Qf5+
- 2.Sexf5#
- 1...Qg6+
- 2.Sxg6#
- 1...Qxe5+
- 2.Sef5#
- 1...Qxe3
- 2.e6#
- 1...Rd6
- 2.Sg6#
- 1...Qd5
- 2.Sxd1#
- 2.Sc2#
- 2.Sg4#
- 2.Sxd5#
- 2.Sef5#
- 2.Sg6#
- 1...Rd5
- 2.Sxd5#
- 2.Sg6#
- threat
- 1.Bb7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 2
- Sets
- Q(h);N_GUARD,P_SPINR(g)::QAB(A)+S(D),XQ(h)
- Q(h);CHECK,N_GUARD,P_SPINQ(h),P_SPINR(g),XP(E)::QAB(A)+S(D)
- Q(h);CHECK,N_GUARD,P_SPINR(g)::QAB(A)+S(D),XQ(h)
- Q(h);CHECK,N_GUARD,P_SPINR(g)::S(G),XQ(h)
- Q(h);CHECK,N_GUARD,P_SPINQ(h),P_SPINR(g),XP(I)::QAB(A)+S(D)
- R(g);P_SPINQ(h)::S(G)
- Tries
- Try
- S(D);CHECK,XB(a)
- Vars
- Q(h);N_GUARD,P_SPINQ(h),P_SPINR(g)::QAB1(A),XQ(h)
- Refutation
- R(g);P_SPINQ(h),P_SPINR(g)
- Try
- S(D);CHECK
- Vars
- Q(h);N_GUARD,P_SPINQ(h),P_SPINR(g)::QAB1(A),XQ(h)
- Refutation
- R(g);P_SPINQ(h),P_SPINR(g)
- Try
- S(D);CHECK
- Vars
- Q(h);N_GUARD,P_SPINQ(h),P_SPINR(g)::QAB1(A),XQ(h)
- Refutation
- R(g);P_SPINQ(h),P_SPINR(g)
- Try
- S(D);CHECK
- Vars
- Q(h);N_GUARD,P_SPINQ(h),P_SPINR(g)::QAB1(A),XQ(h)
- Refutation
- R(g);P_SPINQ(h),P_SPINR(g)
- Try
- B(H);XQ(h)
- Threat
- DUALS(2)
- Vars
- R(f);XB(L)::S(G)
- R(g);::S(D)
- R(g);::S(G)
- Refutation
- S(c);P_SPINS(c),XP(E)
- Try
- R(F);P_PINQ(h),XR(g)
- Threat
- DUALS(6)
- Vars
- Q(h);N_SPINQ(h),XR(F)::S(G)
- P(b);P_PINP(E)::S(G)
- R(f);::S(G)
- S(j);::S(G)
- Refutation
- R(f);N_SPINQ(h),XR(F)
- Try
- P(I);CHECK
- Vars
- Q(h);CHECK,P_SPINQ(h),P_SPINR(g)::QAB(A)+S(D)
- Refutation
- R(f);XB(L)
- Try
- Actual
- B(H);
- Threat
- QAB(A)+S(D),DCHECK
- Vars
- Q(h);CHECK,N_GUARD,P_SPINQ(h),P_SPINR(g),XP(E)::QAB(A)+S(D)
- Q(h);CHECK,N_GUARD,P_SPINR(g)::QAB(A)+S(D),XQ(h)
- Q(h);CHECK,N_GUARD,P_SPINR(g)::S(G),XQ(h)
- Q(h);CHECK,N_GUARD,P_SPINQ(h),P_SPINR(g),XP(I)::QAB(A)+S(D)
- Q(h);N_GUARD,P_SPINQ(h),P_SPINR(g),XS(D)::B(L)+P(I)
- R(g);P_SPINQ(h)::S(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).