MESON Chess Problem Database
Problem Display
PID: 197926 (2KR4/8/n2R1p2/1p2k3/2p3p1/N1r1b1Pb/1BB1Q2N/4qr2 w - - 0 1)
Vatarescu, Paul
Stella Polaris, 1966
#2
9 + 11
SOLUTION
- SOUND
- Sets
- 1...Qf2
- 2.Bxc3#
- 1...Qa1
- 2.Qxe3#
- 1...Qb1
- 2.Bxc3#
- 2.Qxe3#
- 1...Qc1
- 2.Bxc3#
- 1...Qd1
- 2.Qxe3#
- 1...Bg2
- 2.Sxg4#
- 1...b4
- 2.Sxc4#
- 1...Qf2
- Tries
- 1.Qd3?
- threat
- 2.Re8#
- 2.Qe4#
- 2.Qd5#
- 1...Qxg3
- 2.Qe4#
- 1...Qd2
- 2.Re8#
- 2.Qe4#
- 1...Qd1
- 2.Re8#
- 2.Qe4#
- 2.Qxe3#
- 1...Rf4
- 2.Re8#
- 2.Qd5#
- 1...Bc1
- 2.Re8#
- 2.Qd4#
- 2.Qd5#
- 1...Bg1
- 2.Re8#
- 2.Qd5#
- 1...Bd2
- 2.Re8#
- 2.Qd4#
- 2.Qd5#
- 1...Bf2
- 2.Re8#
- 2.Qf5#
- 2.Qd5#
- 1...Bd4
- 2.Qxd4#
- 1...Bf4
- 2.Re8#
- 2.Qf5#
- 2.Qd4#
- 2.Qd5#
- 1...Bc5
- 2.Re8#
- 2.Qd5#
- 1...Bg5
- 2.Re8#
- 2.Qd4#
- 2.Qd5#
- 1...Bb6
- 2.Re8#
- 2.Qd5#
- 1...Bh6
- 2.Re8#
- 2.Qd4#
- 2.Qd5#
- 1...Ba7
- 2.Re8#
- 2.Qd5#
- 1...Bg2
- 2.Sxg4#
- 2.Re8#
- 1...Sb4
- 2.Re8#
- 2.Qe4#
- 1...Sc5
- 2.Qd5#
- 1...Sc7
- 2.Qe4#
- 1...f5
- 2.Re8#
- 2.Qd5#
- 1...cxd3+!
- threat
- 1.Qxg4?
- threat
- 2.Rd5#
- 2.Re6#
- 1...Bxg4+
- 2.Sxg4#
- 1...Qd2
- 2.Re6#
- 1...Qd1
- 2.Re6#
- 1...Rf5
- 2.Qe4#
- 1...Bg2
- 2.Re6#
- 2.Qe6#
- 1...Sb4
- 2.Re6#
- 1...Sc5
- 2.Rd5#
- 1...f5
- 2.Qg7#
- 1...Sc7!
- threat
- 1.Qg2?
- threat
- 2.Qe4#
- 2.Qd5#
- 1...Qxg3
- 2.Qe4#
- 1...Bxg2
- 2.Sxg4#
- 1...Qd2
- 2.Qe4#
- 1...Qd1
- 2.Qe4#
- 1...Rf4
- 2.Qd5#
- 1...Bc1
- 2.Qd5#
- 1...Bg1
- 2.Qd5#
- 1...Bd2
- 2.Qd5#
- 1...Bf2
- 2.Qd5#
- 1...Bd4
- 2.Qd5#
- 1...Bf4
- 2.Qd5#
- 1...Bc5
- 2.Qd5#
- 1...Bg5
- 2.Qd5#
- 1...Bb6
- 2.Qd5#
- 1...Bh6
- 2.Qd5#
- 1...Ba7
- 2.Qd5#
- 1...Sb4
- 2.Qe4#
- 1...Sc5
- 2.Qd5#
- 1...Sc7
- 2.Qe4#
- 1...f5
- 2.Qd5#
- 1...Rf3!
- threat
- 1.Qd3?
- Keys
- 1.Qxc4!
- threat
- 2.Re6#
- 1...bxc4
- 2.Sxc4#
- 1...Sc5
- 2.Qd5#
- 1...Sc7
- 2.Qe4#
- threat
- 1.Qxc4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 6
- Sets
- Q(a);N_GUARD::B(A),XR(c)
- Q(a);N_GUARD::QAR2(C),XB(d)
- B(e);N_GUARD::S(D),XP(g)
- P(h);N_GUARD::S(E),XP(f)
- Tries
- Try
- Q(C);N_PINB(d)
- Threat
- DUALS(3)
- Vars
- Q(a);XP(F)::QAR1(C)
- B(d);N_GUARD,N_SPINR(c)::QAB1(C),XB(d)
- S(j);::QAR1(C)
- Refutation
- P(f);CHECK,XQ(C)
- Try
- Q(C);N_PINB(d),P_SPINQ(C),XP(g)
- Threat
- DUALS(2)
- Vars
- B(e);CHECK,XQ(C)::S(D),XB(e)
- Q(a);::R1(G)
- R(b);N_PINQ(C)::QAR1(C)
- S(j);::R1(G)
- P(k);N_PINQ(C)::QAB(C)
- Refutation
- S(j);
- Try
- Q(C);N_PINB(d)
- Threat
- DUALS(2)
- Vars
- Q(a);XP(F)::QAR1(C)
- B(e);N_GUARD,XQ(C)::S(D),XP(g)
- Q(a);::QAR1(C)
- R(b);::QAR1(C)
- B(d);::QAR1(C)
- B(d);N_SPINR(c)::QAR1(C)
- S(j);::QAR1(C)
- P(k);::QAR1(C)
- Refutation
- R(b);
- Try
- Actual
- Q(C);N_PINB(d),P_SPINQ(C),XP(f)
- Threat
- R1(G)
- Vars
- P(h);XQ(C)::S(E),XP(h)
- S(j);N_PINQ(C)::QAR1(C)
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).