MESON Chess Problem Database
Problem Display
PID: 6362 (3nqnB1/1PPPrPP1/2r1kN2/2P5/Q1P2R2/5K2/8/8 w - - 0 1)
Adabashev, Mark Ivanovich
64 Shakhmatnoe obozrenie, 1929
#2
12 + 6
SOLUTION
- SOUND
- Sets
- 1...Rxd7
- 2.fxe8Q#
- 2.fxe8R#
- 1...Rxf7
- 2.dxe8Q#
- 2.dxe8R#
- 1...Rxd7
- Tries
- 1.Qd1?
- threat
- 2.Qe2#
- 2.Qe1#
- 2.Qd5#
- 1...Ke5
- 2.Qe2#
- 2.Qe1#
- 2.Qd5#
- 1...Qxd7
- 2.Qe2#
- 2.Qe1#
- 1...Rxd7
- 2.Qe2#
- 2.Qe1#
- 2.fxe8Q#
- 2.fxe8R#
- 1...Rxf7
- 2.Qe2#
- 2.Qe1#
- 2.dxe8Q#
- 2.dxe8R#
- 1...Sxd7
- 2.Qd5#
- 1...Rd6
- 2.Qe2#
- 2.Qe1#
- 2.Qxd6#
- 1...Sg6
- 2.Qd5#
- 1...Rxc5!
- threat
- 1.Qc2?
- threat
- 2.Qe4#
- 2.Qf5#
- 2.Qe2#
- 1...Ke5
- 2.Qe4#
- 2.Qf5#
- 2.Qe2#
- 1...Rxd7
- 2.Qe4#
- 2.Qe2#
- 2.fxe8Q#
- 2.fxe8R#
- 1...Rxf7
- 2.Qe4#
- 2.Qe2#
- 2.dxe8Q#
- 2.dxe8R#
- 1...Sxd7
- 2.Qf5#
- 1...Sg6
- 2.Qf5#
- 1...Rxc5!
- threat
- 1.Qxc6+?
- 1...Ke5
- 2.Sg4#
- 2.Qe4#
- 2.Qd5#
- 2.Qd6#
- 1...Sxc6!
- 1...Ke5
- 1.Qa1?
- threat
- 2.Qe1#
- 1...Sxd7
- 2.f8S#
- 1...Sg6
- 2.f8S#
- 1...Rxc5!
- threat
- 1.cxd8S+?
- 1...Ke5
- 2.Sg4#
- 2.Qa1#
- 1...Qxd8!
- 1...Ke5
- 1.fxe8Q+?
- 1...Ke5
- 2.Sg4#
- 2.Qh5#
- 2.Qa1#
- 1...Sf7!
- 1...Ke5
- 1.fxe8R+?
- 1...Ke5
- 2.Sg4#
- 2.Qa1#
- 1...Sf7!
- 1...Ke5
- 1.gxf8S+?
- 1...Ke5
- 2.Sg4#
- 2.Qa1#
- 1...Qxf8!
- 1...Ke5
- 1.Qd1?
- Keys
- 1.Sg4!
- 1...Kxd7
- 2.c8Q#
- 1...Qxd7
- 2.Rf6#
- 2.gxf8S#
- 1...Qxf7
- 2.gxf8S#
- 1...Rxc5
- 2.Rf6#
- 1...Rxc7
- 2.Rf6#
- 1...Rxd7
- 2.fxe8Q#
- 2.fxe8R#
- 1...Rxf7
- 2.dxe8Q#
- 1...Sxb7
- 2.fxe8Q#
- 1...Sxf7
- 2.Qxc6#
- 1...Sxd7
- 2.f8S#
- 1...Ra6
- 2.Rf6#
- 1...Rb6
- 2.Rf6#
- 1...Rd6
- 2.Rf6#
- 1...Sg6
- 2.f8S#
- 1...Sh7
- 2.f8S#
- 1...Kxd7
- 1.Sg4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 13
- REMOVED MATES = 0
- Sets
- R(c);XP(I)::PXQ(e)=Q
- R(c);P_SPINR(c),XP(J)::PXQ(e)=Q
- Tries
- Try
- Q(B);
- Threat
- DUALS(3)
- Vars
- S(f);XP(I)::QAB1(B)
- S(f);::QAB1(B)
- Refutation
- R(a);XP(E)
- Try
- Q(B);
- Threat
- DUALS(3)
- Vars
- S(f);XP(I)::QAB1(B)
- S(f);::QAB1(B)
- Refutation
- R(a);XP(E)
- Try
- Q(B);CHECK,XR(a)
- Refutation
- S(d);XQ(B)
- Try
- Q(B);
- Threat
- QAR(B)
- Vars
- S(f);OGATE,XP(I)::P=S
- S(f);OGATE::P=S
- Refutation
- R(a);XP(E)
- Try
- P(H);CHECK,XS(d)
- Refutation
- Q(e);XS(H)
- Try
- P(J);CHECK,P_PINR(c),XQ(e)
- Refutation
- S(d);P_SPINS(d)
- Try
- P(J);CHECK,P_PINR(c),XQ(e)
- Refutation
- S(d);P_SPINS(d)
- Try
- P(K);CHECK,XS(f)
- Refutation
- Q(e);XS(K)
- Try
- Actual
- S(F);
- Vars
- K(b);P_SPINR(a),S_FLIGHT,XP(I)::P=Q
- Q(e);N_GUARD,P_PINR(D),P_SPINQ(e),XP(J)::PXS(f)=S
- R(a);XP(E)::R1(D)
- R(a);XP(H)::R1(D)
- R(c);XP(I)::PXQ(e)=Q
- R(c);P_PINR(D),P_SPINR(c),XP(J)::PXQ(e)=Q
- S(d);N_GUARD,XP(G)::PXQ(e)=Q
- S(d);N_GUARD,P_SPINS(d),XP(J)::QAR2(B),XR(a)
- S(f);OGATE,XP(I)::P=S
- R(a);::R1(D)
- S(f);OGATE::P=S
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).