MESON Chess Problem Database
Problem Display
PID: 262532 (1q6/3RBp1n/Q7/3nkrN1/6RK/3B2N1/3Pr1p1/b7 w - - 0 1)
Meng, Jean Philippe
Comm., Europe Echecs, 1986
#2
9 + 9
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Qd6
- 2.Qxd6#
- 1...Qa7
- 2.Qd6#
- 1...Qb1
- 2.Qd6#
- 1...Qb2
- 2.Qd6#
- 1...Qb3
- 2.Qd6#
- 1...Qb5
- 2.Qd6#
- 1...Qb7
- 2.Qd6#
- 1...Qa8
- 2.Qd6#
- 1...Qc8
- 2.Qd6#
- 1...Qd8
- 2.Qd6#
- 1...Qe8
- 2.Qd6#
- 1...Qf8
- 2.Qd6#
- 1...Qg8
- 2.Qd6#
- 1...Qh8
- 2.Qd6#
- 1...Rxd2
- 2.Re4#
- 1...Ref2
- 2.Re4#
- 1...Re4
- 2.Rxe4#
- 1...Rf3
- 2.Sxf3#
- 1...Se3
- 2.Re4#
- 1...Sb4
- 2.Qxa1#
- 1...Sf4
- 2.Sf3#
- 1...Sb6
- 2.Qxa1#
- 1...Sdf6
- 2.Sxf7#
- 1...Sc7
- 2.Qd6#
- 1...Shf6
- 2.Sxf7#
- 1...f6
- 2.Sf7#
- 2.Qe6#
- 1...Qd6
- Tries
- 1.Bxf5?
- threat
- 2.Sf3#
- 2.Sxf7#
- 1...Re4
- 2.Sf3#
- 2.Rxe4#
- 1...g1S
- 2.Sxf7#
- 1...Qb3
- 2.Sxf7#
- 2.Qd6#
- 1...Qe8
- 2.Sf3#
- 2.Qd6#
- 1...Qf8
- 2.Sf3#
- 2.Qd6#
- 1...Qg8
- 2.Sf3#
- 2.Qd6#
- 1...Rf2
- 2.Sxf7#
- 2.Re4#
- 1...Re3
- 2.Sxf7#
- 1...f6
- 2.Sf3#
- 2.Sf7#
- 2.Qe6#
- 1...Sxg5!
- threat
- 1.Bd6+?
- 1...Qxd6
- 2.Qxd6#
- 1...Kf6!
- 1...Qxd6
- 1.Bf6+?
- 1...Sdxf6
- 2.Sxf7#
- 1...Shxf6
- 2.Sxf7#
- 1...Rxf6!
- 1...Sdxf6
- 1.Qxa1+?
- 1...Sc3
- 2.Qxc3#
- 1...Qb2!
- 1...Sc3
- 1.Bxf5?
- Keys
- 1.Bc4!
- threat
- 2.Rxd5#
- 1...Rxd2
- 2.Re4#
- 1...Sxe7
- 2.Rxe7#
- 1...Qd6
- 2.Qxd6#
- 1...Qb5
- 2.Qd6#
- 1...Qb7
- 2.Qd6#
- 1...Qa8
- 2.Qd6#
- 1...Qd8
- 2.Qd6#
- 1...Sc3
- 2.d4#
- 1...Se3
- 2.Re4#
- 1...Sb4
- 2.Qxa1#
- 1...Sf4
- 2.Sf3#
- 1...Sb6
- 2.Qxa1#
- 1...Sdf6
- 2.Sxf7#
- 1...Sc7
- 2.Qd6#
- 1...Shf6
- 2.Sxf7#
- threat
- 1.Bc4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 12
- Sets
- Q(i);N_GUARD::QAB1(G),XQ(i)
- Q(i);N_GUARD::QAB1(G)
- R(b);N_GUARD,XP(A)::R1(D)
- R(b);N_GUARD::R1(D)
- R(b);N_GUARD,P_PINR(D)::R1(D),XR(b)
- R(f);N_GUARD::S(F),XR(f)
- S(d);S_CUTR(b)::R1(D)
- S(d);N_GUARD,S_CUTQ(i)::QAB(G),XB(a)
- S(d);S_CUTR(f)::S(F)
- S(d);S_CUTR(f)::S(F),XP(g)
- S(d);S_CUTQ(i)::QAB1(G)
- S(h);S_CUTR(f)::S(F),XP(g)
- Tries
- Try
- B(B);XR(f)
- Threat
- DUALS(2)
- Vars
- P(c);::S(F),XP(g)
- R(b);::S(F),XP(g)
- Refutation
- S(h);XS(F)
- Try
- B(I);CHECK
- Vars
- Q(i);OGATE,XB(I)::QAB1(G),XQ(i)
- Refutation
- K(e);S_FLIGHT
- Try
- B(I);CHECK
- Vars
- S(d);XB(I)::S(F),XP(g)
- S(h);XB(I)::S(F),XP(g)
- Refutation
- R(f);XB(I)
- Try
- Q(G);CHECK,XB(a)
- Vars
- S(d);N_GUARD,P_SPINS(d)::QAB(G),XS(d)
- Refutation
- Q(i);P_SPINQ(i)
- Try
- Actual
- B(B);
- Threat
- R1(H),XS(d)
- Vars
- R(b);N_GUARD,XP(A)::R1(D)
- S(d);OGATE,XB(I)::R(H),XS(d)
- Q(i);N_GUARD::QAB1(G),XQ(i)
- Q(i);N_GUARD::QAB1(G)
- S(d);S_CUTB(a)::P(A)
- S(d);S_CUTR(b)::R1(D)
- S(d);N_GUARD,S_CUTQ(i)::QAB(G),XB(a)
- S(d);S_CUTR(f)::S(F)
- S(d);S_CUTR(f)::S(F),XP(g)
- S(d);S_CUTQ(i)::QAB1(G)
- S(h);S_CUTR(f)::S(F),XP(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).