MESON Chess Problem Database
Problem Display
PID: 106751 (r4R2/3p4/4p2N/2b1N2p/1pP1k1pP/1R2P1pn/pQ6/2B1K3 w - - 0 1)
Einat, Paz
Retter, Yosef
3rd Place, Subotica Quick Ty., 2009
#2
10 + 11
SOLUTION
- SOUND
- Sets
- 1...Bxe3
- 2.Rxe3#
- 1...Bd4
- 2.Qxd4#
- 1...Bd6
- 2.Qd4#
- 1...Be7
- 2.Qd4#
- 1...Bxf8
- 2.Qd4#
- 1...Sg1
- 2.Rf4#
- 1...Sf2
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Sg5
- 2.Rf4#
- 1...Bxe3
- Tries
- 1.Sd3?
- threat
- 2.Sxc5#
- 2.Qe5#
- 2.Qg2#
- 1...Bxe3
- 2.Qe5#
- 1...Bxf8
- 2.Qg2#
- 1...Sf4
- 2.Rxf4#
- 1...a1Q
- 2.Sxc5#
- 2.Qg2#
- 1...a1B
- 2.Sxc5#
- 2.Qg2#
- 1...Ra5
- 2.Qe5#
- 2.Qg2#
- 1...Rc8
- 2.Qe5#
- 2.Qg2#
- 1...Bd4
- 2.Qxd4#
- 2.Qg2#
- 1...Bb6
- 2.Qe5#
- 2.Qg2#
- 1...Bd6
- 2.Qd4#
- 2.Qg2#
- 1...Ba7
- 2.Qe5#
- 2.Qg2#
- 1...Be7
- 2.Qd4#
- 2.Qe5#
- 2.Qg2#
- 1...Sg1
- 2.Sxc5#
- 2.Rf4#
- 2.Qe5#
- 1...Sf2
- 2.Sxc5#
- 2.Rf4#
- 2.Qe5#
- 1...Sg5
- 2.Sxc5#
- 2.Rf4#
- 2.Qe5#
- 1...g2
- 2.Sxc5#
- 2.Qe5#
- 2.Qxg2#
- 1...e5
- 2.Sxc5#
- 2.Qxe5#
- 2.Qg2#
- 1...d6
- 2.Qg2#
- 1...Rxf8!
- threat
- 1.Sf3?
- threat
- 2.Sd2#
- 2.Qe5#
- 2.Qc2#
- 1...Rxf8
- 2.Sd2#
- 1...Bxe3
- 2.Rxe3#
- 2.Qe5#
- 2.Qc2#
- 1...Bxf8
- 2.Sd2#
- 1...Sf4
- 2.Sd2#
- 2.Sg5#
- 2.Rxf4#
- 1...a1Q
- 2.Sd2#
- 2.Qc2#
- 1...a1S
- 2.Sd2#
- 2.Qe5#
- 1...a1B
- 2.Sd2#
- 2.Qb1#
- 2.Qc2#
- 1...Bd4
- 2.Qxd4#
- 2.Qc2#
- 1...Bd6
- 2.Sd2#
- 2.Qd4#
- 2.Qc2#
- 1...Sf2
- 2.Sd2#
- 2.Sg5#
- 2.Rf4#
- 2.Qe5#
- 1...e5
- 2.Sd2#
- 2.Qxe5#
- 2.Qc2#
- 1...d6
- 2.Sd2#
- 2.Qc2#
- 1...gxf3!
- threat
- 1.Sg6?
- threat
- 2.Qe5#
- 2.Qc2#
- 2.Qg2#
- 1...Bxe3
- 2.Rxe3#
- 2.Qe5#
- 1...Bxf8
- 2.Qg2#
- 1...Sf4
- 2.Rxf4#
- 1...a1Q
- 2.Qc2#
- 2.Qg2#
- 1...a1S
- 2.Qe5#
- 2.Qg2#
- 1...a1B
- 2.Qb1#
- 2.Qc2#
- 2.Qg2#
- 1...Bd4
- 2.Qxd4#
- 2.Qc2#
- 2.Qg2#
- 1...Bd6
- 2.Qd4#
- 2.Qc2#
- 2.Qg2#
- 1...Sg1
- 2.Rf4#
- 2.Qe5#
- 2.Qc2#
- 1...Sf2
- 2.Rf4#
- 2.Qe5#
- 1...Sg5
- 2.Rf4#
- 2.Qe5#
- 2.Qc2#
- 1...g2
- 2.Qe5#
- 2.Qc2#
- 2.Qxg2#
- 1...e5
- 2.Qxe5#
- 2.Qc2#
- 2.Qg2#
- 1...d6
- 2.Qc2#
- 2.Qg2#
- 1...Rxf8!
- threat
- 1.Sxd7?
- threat
- 2.Sxc5#
- 2.Qe5#
- 2.Qc2#
- 2.Qg2#
- 1...Bxe3
- 2.Rxe3#
- 2.Qe5#
- 1...Bxf8
- 2.Qg2#
- 1...Sf4
- 2.Rxf4#
- 1...a1Q
- 2.Sxc5#
- 2.Qc2#
- 2.Qg2#
- 1...a1S
- 2.Sxc5#
- 2.Qe5#
- 2.Qg2#
- 1...a1B
- 2.Sxc5#
- 2.Qb1#
- 2.Qc2#
- 2.Qg2#
- 1...Ra5
- 2.Qe5#
- 2.Qc2#
- 2.Qg2#
- 1...Rc8
- 2.Qe5#
- 2.Qc2#
- 2.Qg2#
- 1...Bd4
- 2.Qxd4#
- 2.Qc2#
- 2.Qg2#
- 1...Bb6
- 2.Qe5#
- 2.Qc2#
- 2.Qg2#
- 1...Bd6
- 2.Qd4#
- 2.Qc2#
- 2.Qg2#
- 1...Ba7
- 2.Qe5#
- 2.Qc2#
- 2.Qg2#
- 1...Be7
- 2.Qd4#
- 2.Qe5#
- 2.Qc2#
- 2.Qg2#
- 1...Sg1
- 2.Sxc5#
- 2.Rf4#
- 2.Qe5#
- 2.Qc2#
- 1...Sf2
- 2.Sxc5#
- 2.Rf4#
- 2.Qe5#
- 1...Sg5
- 2.Sxc5#
- 2.Rf4#
- 2.Qe5#
- 2.Qc2#
- 1...g2
- 2.Sxc5#
- 2.Qe5#
- 2.Qc2#
- 2.Qxg2#
- 1...e5
- 2.Sxc5#
- 2.Qxe5#
- 2.Qc2#
- 2.Qg2#
- 1...Rxf8!
- threat
- 1.Shxg4?
- threat
- 2.Qc2#
- 2.Qg2#
- 1...Rxf8
- 2.Qc2#
- 1...Bxe3
- 2.Rxe3#
- 1...Bxf8
- 2.Qc2#
- 1...a1S
- 2.Qg2#
- 1...Sg1
- 2.Rf4#
- 2.Qc2#
- 1...Sf2
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Sg5
- 2.Rf4#
- 2.Qc2#
- 1...g2
- 2.Qc2#
- 2.Qxg2#
- 1...hxg4!
- threat
- 1.Sf5?
- threat
- 2.Sxg3#
- 1...Bd4
- 2.Qxd4#
- 1...g2
- 2.Sg3#
- 1...exf5!
- threat
- 1.Shf7?
- threat
- 2.Qc2#
- 1...Kf5
- 2.Sd6#
- 1...Bxe3
- 2.Sd6#
- 1...Sf2
- 2.Sg5#
- 1...Sf4
- 2.Sg5#
- 1...a1S!
- threat
- 1.Rf5?
- threat
- 2.Qc2#
- 2.Qg2#
- 1...Bxe3
- 2.Rxe3#
- 1...a1S
- 2.Qg2#
- 1...Sg1
- 2.Rf4#
- 2.Qc2#
- 1...Sf2
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Sg5
- 2.Rf4#
- 2.Qc2#
- 1...g2
- 2.Qc2#
- 2.Qxg2#
- 1...exf5!
- threat
- 1.Sd3?
- Keys
- 1.Sef7!
- threat
- 2.Qg2#
- 1...Kf3
- 2.Sg5#
- 1...Bxe3
- 2.Sd6#
- 1...Sg1
- 2.Sg5#
- 1...Sf2
- 2.Sg5#
- 1...Sf4
- 2.Sg5#
- 1...Sg5
- 2.Sxg5#
- 1...g2
- 2.Qxg2#
- threat
- 1.Sef7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 5
- ADDED MATES = 2
- REMOVED MATES = 4
- Sets
- B(g);OGATE,XP(E)::R1(D),XB(g)
- B(g);N_GUARD::QAR1(C),XB(g)
- B(g);N_GUARD::QAR1(C)
- B(g);N_GUARD,XR(J)::QAR1(C)
- S(c);N_GUARD::R1(J)
- S(c);N_GUARD::R1(J),XS(c)
- Tries
- Try
- S(H);
- Threat
- DUALS(3)
- Vars
- B(g);XP(E)::QAR1(C)
- B(g);XR(J)::QAB(C)
- S(c);N_GUARD::R1(J),XS(c)
- P(j);::QAB(C)
- Refutation
- R(k);XR(J)
- Try
- S(H);
- Threat
- DUALS(3)
- Vars
- R(k);XR(J)::S(H)
- B(g);XR(J)::S(H)
- Refutation
- P(f);XS(H)
- Try
- S(H);
- Threat
- DUALS(3)
- Vars
- B(g);XR(J)::QAB(C)
- S(c);N_GUARD::R1(J),XS(c)
- Refutation
- R(k);XR(J)
- Try
- S(H);XP(j)
- Threat
- DUALS(4)
- Vars
- B(g);XR(J)::QAB(C)
- S(c);N_GUARD::R1(J),XS(c)
- Refutation
- R(k);XR(J)
- Try
- S(I);XP(f)
- Threat
- DUALS(2)
- Vars
- R(k);XR(J)::QAB(C)
- B(g);OGATE,XP(E)::R1(D),XB(g)
- B(g);XR(J)::QAB(C)
- P(a);::QAB(C)
- S(c);N_GUARD::R1(J)
- S(c);N_GUARD::R1(J),XS(c)
- Refutation
- P(h);XS(I)
- Try
- S(I);
- Threat
- S(I),XP(b)
- Vars
- B(g);N_GUARD::QAR1(C),XB(g)
- P(b);::S(I)
- Refutation
- P(i);XS(I)
- Try
- S(I);
- Threat
- QAB(C)
- Vars
- K(e);S_FLIGHT::R(J)+S(I),DCHECK
- B(g);N_GUARD,XP(E)::S(I)
- S(c);N_GUARD::S(I)
- Refutation
- P(a);
- Try
- R(J);
- Threat
- DUALS(2)
- Vars
- B(g);OGATE,XP(E)::R1(D),XB(g)
- P(a);::QAB(C)
- S(c);N_GUARD::R1(J)
- S(c);N_GUARD::R1(J),XS(c)
- Refutation
- P(i);XR(J)
- Try
- Actual
- S(H);
- Threat
- QAB(C)
- Vars
- K(e);S_FLIGHT::R(J)+S(H),DCHECK
- B(g);N_GUARD,XP(E)::S(H)
- S(c);N_GUARD::S(H)
- S(c);N_GUARD::S(H),XS(c)
- P(b);::QAB(C),XP(b)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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