MESON Chess Problem Database
Problem Display
PID: 268104 (4b3/3nKp2/1Q1pnr2/3Nk1B1/2pRBp2/q7/2NbR3/3r4 w - - 0 1)
Maleika, Gerhard
The Problemist, 2022
#2
8 + 12
SOLUTION
- SOUND
- Sets
- 1...Qc1
- 2.Qxd6#
- 1...Qb2
- 2.Qxd6#
- 1...Qa1
- 2.Qxd6#
- 1...Qa2
- 2.Qxd6#
- 1...Qb3
- 2.Qxd6#
- 1...Qc3
- 2.Qxd6#
- 1...Qd3
- 2.Qxd6#
- 1...Qe3
- 2.Qxd6#
- 1...Qf3
- 2.Qxd6#
- 1...Qg3
- 2.Qxd6#
- 1...Qh3
- 2.Qxd6#
- 1...Qa4
- 2.Qxd6#
- 1...Qa5
- 2.Qxd6#
- 1...Qa7
- 2.Qxd6#
- 1...Qa8
- 2.Qxd6#
- 1...Be1
- 2.Bd3#
- 1...Bc3
- 2.Bd3#
- 2.Bg6#
- 2.Bh7#
- 1...Bb4
- 2.Bd3#
- 1...Ba5
- 2.Bd3#
- 1...Sxd4
- 2.Qxd4#
- 1...Sc5
- 2.Bxf6#
- 2.Qxd6#
- 1...Sxb6
- 2.Bxf6#
- 1...Sb8
- 2.Bxf6#
- 1...Sf8
- 2.Bxf6#
- 1...Qc1
- Tries
- 1.Sxf6?
- threat
- 2.Sg4#
- 2.Rd5#
- 1...Sxd4
- 2.Sg4#
- 2.Qxd4#
- 1...Sxb6
- 2.Sg4#
- 1...Sxf6
- 2.Bxf6#
- 1...Qc5
- 2.Sg4#
- 1...Qd3
- 2.Sg4#
- 2.Qxd6#
- 1...Qf3
- 2.Rd5#
- 2.Qxd6#
- 1...Qg3
- 2.Rd5#
- 2.Qxd6#
- 1...Qh3
- 2.Rd5#
- 2.Qxd6#
- 1...Qa5
- 2.Sg4#
- 2.Qxd6#
- 1...Qa8
- 2.Sg4#
- 2.Qxd6#
- 1...Rg1
- 2.Rd5#
- 1...Bc1
- 2.Sg4#
- 1...Be1
- 2.Sg4#
- 2.Bd3#
- 1...Bc3
- 2.Sg4#
- 2.Bd3#
- 2.Bg6#
- 2.Bh7#
- 1...Be3
- 2.Sg4#
- 1...Bb4
- 2.Sg4#
- 2.Bd3#
- 1...Ba5
- 2.Sg4#
- 2.Bd3#
- 1...Sc7
- 2.Sg4#
- 1...d5+!
- threat
- 1.Bg6+?
- 1...Qe3
- 2.Qxd6#
- 1...Be3!
- 1...Qe3
- 1.Bh7+?
- 1...Qe3
- 2.Qxd6#
- 1...Be3!
- 1...Qe3
- 1.Sxf6?
- Keys
- 1.Sdb4!
- threat
- 2.Sc6#
- 2.Rd5#
- 2.Qxd6#
- 1...Qxb4
- 2.Rd5#
- 1...Bxb4
- 2.Bd3#
- 1...Sxd4
- 2.Qxd4#
- 1...Sxg5
- 2.Sc6#
- 2.Rd5#
- 1...Sxb6
- 2.Bxf6#
- 1...Qd3
- 2.Sc6#
- 2.Qxd6#
- 1...Qe3
- 2.Sc6#
- 2.Qxd6#
- 1...Qa4
- 2.Rd5#
- 2.Qxd6#
- 1...Qa5
- 2.Sc6#
- 2.Qxd6#
- 1...Qa6
- 2.Sc6#
- 2.Rd5#
- 1...Qa8
- 2.Qxd6#
- 1...Bc1
- 2.Sc6#
- 2.Qxd6#
- 1...Be1
- 2.Sc6#
- 2.Bd3#
- 2.Qxd6#
- 1...Bc3
- 2.Sc6#
- 2.Bd3#
- 2.Bg6#
- 2.Bh7#
- 2.Qxd6#
- 1...Be3
- 2.Sc6#
- 2.Qxd6#
- 1...Sec5
- 2.Sc6#
- 2.Rd5#
- 1...Sc7
- 2.Sc6#
- 1...Sg7
- 2.Sc6#
- 2.Rd5#
- 1...Sd8
- 2.Rd5#
- 1...Sef8
- 2.Sc6#
- 2.Rd5#
- 1...Sdc5
- 2.Bxf6#
- 2.Rd5#
- 2.Qxd6#
- 1...Sb8
- 2.Bxf6#
- 2.Rd5#
- 2.Qxd6#
- 1...Sdf8
- 2.Bxf6#
- 2.Rd5#
- 2.Qxd6#
- 1...d5
- 2.Rxd5#
- 2.Qd6#
- threat
- 1.Sdb4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 18
- Sets
- Q(c);N_GUARD::QAB1(G),XP(g)
- B(b);N_GUARD::R(B)+B(D)
- S(h);OGATE,XR(C)::QAB1(G),XS(h)
- S(j);N_GUARD,XQ(G)::B(F),XR(i)
- S(j);N_GUARD::B(F),XR(i)
- Tries
- Try
- S(E);XR(i)
- Threat
- DUALS(2)
- Vars
- S(j);XQ(G)::S(E)
- S(j);OGATE,XS(E)::B(F),XS(j)
- Q(c);::S(E)
- R(a);::R1(C)
- B(b);::S(E)
- S(h);::S(E)
- Refutation
- P(g);CHECK
- Try
- B(D);CHECK
- Vars
- Q(c);P_SPINQ(c)::QAB1(G),XP(g)
- Refutation
- B(b);P_SPINB(b)
- Try
- B(D);CHECK
- Vars
- Q(c);P_SPINQ(c)::QAB1(G),XP(g)
- Refutation
- B(b);P_SPINB(b)
- Try
- Actual
- S(E);
- Threat
- DUALS(3)
- Vars
- Q(c);XS(E)::R1(C)
- B(b);N_GUARD,XS(E)::R(B)+B(D)
- S(h);OGATE,XR(C)::QAB1(G),XS(h)
- S(j);N_GUARD,XQ(G)::B(F),XR(i)
- Q(c);::QAB1(G),XP(g)
- S(h);::S(E)
- S(h);::R1(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).