MESON Chess Problem Database
Problem Display
PID: 124546 (7K/7P/1p1ppPR1/1R1n1k1P/2N1n2p/2p1q3/4N1b1/BBQ5 w - - 0 1)
Sankaran, Nandakumar
Internet, 1998
#2
11 + 10
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qg1
- 2.Qf4#
- 2.Qg5#
- 1...Qf2
- 2.Qg5#
- 1...Qd4
- 2.Sxd4#
- 2.Qf4#
- 2.Qg5#
- 1...Qf4
- 2.Sd4#
- 2.Qxf4#
- 1...Qc5
- 2.Qg5#
- 1...Qg5
- 2.Qxg5#
- 1...Qh6
- 2.Sd4#
- 1...Qxe2
- 2.Qg5#
- 1...Qd3
- 2.Qf4#
- 1...Qf3
- 2.Sd4#
- 2.Qg5#
- 1...Qg3
- 2.Sd4#
- 1...Qh3
- 2.Sd4#
- 2.Qf4#
- 2.Qg5#
- 1...c2
- 2.Sxe3#
- 1...Qg1
- Tries
- 1.Sd4+?
- 1...Qxd4
- 2.Qg5#
- 1...Kf4!
- 1...Qxd4
- 1.Bxc3?
- threat
- 2.Sxe3#
- 2.Sxd6#
- 1...Qxc1
- 2.Sxd6#
- 1...Qxe2
- 2.Sxd6#
- 2.Rg5#
- 2.Qg5#
- 1...Qxc3
- 2.Qf4#
- 2.Qg5#
- 1...Qg5
- 2.Rxg5#
- 2.Qxg5#
- 1...Qg1
- 2.Sxd6#
- 2.Rg5#
- 2.Qf4#
- 2.Qg5#
- 1...Qd2
- 2.Sxd6#
- 1...Qf2
- 2.Sxd6#
- 2.Rg5#
- 2.Qg5#
- 1...Qd4
- 2.Sxd4#
- 2.Qf4#
- 2.Qg5#
- 1...Qf4
- 2.Sd4#
- 2.Qxf4#
- 1...Qc5
- 2.Rg5#
- 2.Qg5#
- 1...Qh6
- 2.Sd4#
- 2.Sxd6#
- 1...Qd3
- 2.Qf4#
- 1...Qf3
- 2.Sd4#
- 2.Sxd6#
- 2.Rg5#
- 2.Qg5#
- 1...Qg3
- 2.Sd4#
- 1...Qh3
- 2.Sd4#
- 2.Sxd6#
- 2.Rg5#
- 2.Qf4#
- 2.Qg5#
- 1...e5!
- threat
- 1.Qxe3?
- threat
- 2.Sd4#
- 2.Qf4#
- 2.Qg5#
- 1...c2
- 2.Sd4#
- 2.Qf4#
- 1...e5!
- threat
- 1.Sd4+?
- Keys
- 1.f7!
- threat
- 2.f8Q#
- 2.f8R#
- 1...Qd4+
- 2.Sxd4#
- 1...Qxc1
- 2.f8Q#
- 2.f8R#
- 1...Qxe2
- 2.Qg5#
- 2.f8Q#
- 2.f8R#
- 1...Qg5
- 2.Qxg5#
- 1...Qg1
- 2.Qf4#
- 2.Qg5#
- 2.f8Q#
- 2.f8R#
- 1...Qd2
- 2.f8Q#
- 2.f8R#
- 1...Qf2
- 2.Qg5#
- 2.f8Q#
- 2.f8R#
- 1...Qf4
- 2.Sd4#
- 2.Qxf4#
- 2.f8Q#
- 2.f8R#
- 1...Qc5
- 2.Qg5#
- 1...Qh6
- 2.Sd4#
- 1...Qd3
- 2.Qf4#
- 1...Qf3
- 2.Sd4#
- 2.Qg5#
- 2.f8Q#
- 2.f8R#
- 1...Qg3
- 2.Sd4#
- 2.f8Q#
- 2.f8R#
- 1...Qh3
- 2.Sd4#
- 2.Qf4#
- 2.Qg5#
- 2.f8Q#
- 2.f8R#
- 1...Bf1
- 2.f8Q#
- 2.f8R#
- 1...Bh1
- 2.f8Q#
- 2.f8R#
- 1...Bf3
- 2.f8Q#
- 2.f8R#
- 1...Bh3
- 2.f8Q#
- 2.f8R#
- 1...c2
- 2.Sxe3#
- 1...h3
- 2.f8Q#
- 2.f8R#
- 1...e5
- 2.Sxd6#
- threat
- 1.f7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 3
- Sets
- Q(c);OGATE::QAR1(C)
- Q(c);OGATE::QAR1(C),XQ(c)
- Q(c);N_GUARD,P_PINP(J)::S(D)
- Q(c);OGATE,XS(D)::QAR1(C)
- Q(c);N_SPINS(d),OGATE,P_SPINS(f)::QAR1(C)
- Q(c);N_GUARD::S(D)
- P(b);N_SPINS(d),P_SPINS(f)::S(E),XQ(c)
- Tries
- Try
- S(D);CHECK
- Vars
- Q(c);OGATE,P_PINP(H),XS(D)::QAR1(C)
- Refutation
- K(g);N_SPINS(d),P-FLIGHT,P_SPINQ(c)
- Try
- B(A);XP(b)
- Threat
- DUALS(2)
- Vars
- Q(c);XQ(C)::S(E),XP(i)
- Q(c);::S(E),XP(i)
- Q(c);N_SPINS(d),OGATE,P_SPINS(f)::QAR1(C)
- Q(c);N_GUARD::S(D)
- Refutation
- P(j);
- Try
- Q(C);XQ(c)
- Threat
- DUALS(3)
- Refutation
- P(j);
- Try
- Actual
- P(H);
- Threat
- P=Q
- Vars
- Q(c);CHECK,N_GUARD::S(D),XQ(c)
- Q(c);XQ(C)::P=Q
- Q(c);OGATE::QAR1(C),XQ(c)
- Q(c);::P=Q
- Q(c);OGATE::QAR1(C)
- Q(c);N_GUARD,P_PINP(J)::S(D)
- Q(c);N_SPINS(d),OGATE,P_SPINS(f)::QAR1(C)
- B(a);::P=Q
- P(b);N_SPINS(d),P_SPINS(f)::S(E),XQ(c)
- P(e);::P=Q
- P(j);SBLOCK::S(E),XP(i)
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).