MESON Chess Problem Database
Problem Display
PID: 251710 (3b1B2/1NpQn3/4P3/2P2PR1/K1k2r2/1pPb3q/1Pp3r1/3R1N2 w - - 0 1)
Maleika, Gerhard
Die Schwalbe, 2021
#2
12 + 10
SOLUTION
- SOUND
- Sets
- 1...Qg4
- 2.Se3#
- 2.Qxd3#
- 1...Qxf5
- 2.Se3#
- 1...Qh1
- 2.Se3#
- 2.Qxd3#
- 1...Qh2
- 2.Se3#
- 2.Qxd3#
- 1...Qe3
- 2.Sxe3#
- 1...Qh4
- 2.Se3#
- 2.Qxd3#
- 1...Qh5
- 2.Se3#
- 2.Qxd3#
- 1...Qh6
- 2.Se3#
- 2.Qxd3#
- 1...Qh7
- 2.Se3#
- 2.Qxd3#
- 1...Qh8
- 2.Se3#
- 2.Qxd3#
- 1...Rg1
- 2.Sd2#
- 1...Rd2
- 2.Sxd2#
- 1...Rg3
- 2.Sd2#
- 1...Rgg4
- 2.Sd2#
- 1...Rxg5
- 2.Sd2#
- 1...Rxf1
- 2.Qd4#
- 1...Rf2
- 2.Qd4#
- 1...Rf3
- 2.Qd4#
- 1...Rd4
- 2.Qxd4#
- 1...Rxf5
- 2.Qd4#
- 1...Bxf1
- 2.Qb5#
- 1...Be2
- 2.Sd2#
- 2.Qb5#
- 1...Be4
- 2.Rd4#
- 2.Qb5#
- 2.Qd4#
- 1...Bxf5
- 2.Qb5#
- 1...Sd5
- 2.Sa5#
- 2.Qb5#
- 1...Sxf5
- 2.Sa5#
- 1...Sg6
- 2.Sa5#
- 1...Sc8
- 2.Sa5#
- 1...Sg8
- 2.Sa5#
- 1...Qg4
- Tries
- 1.Rg3?
- threat
- 2.Se3#
- 2.Qxd3#
- 1...Qxf5
- 2.Se3#
- 1...Rxg3
- 2.Sd2#
- 1...Rxf1
- 2.Qxd3#
- 2.Qd4#
- 1...Bxf1
- 2.Qb5#
- 1...Bxf5
- 2.Se3#
- 2.Qb5#
- 1...Sxf5
- 2.Sa5#
- 2.Qxd3#
- 1...cxd1Q
- 2.Se3#
- 1...cxd1S
- 2.Qxd3#
- 1...cxd1R
- 2.Se3#
- 1...c1Q
- 2.Qxd3#
- 1...c1S
- 2.Se3#
- 1...c1B
- 2.Qxd3#
- 1...Rd2
- 2.Sxd2#
- 2.Se3#
- 1...Re2
- 2.Qxd3#
- 1...Rf3
- 2.Qd4#
- 1...Rd4
- 2.Se3#
- 2.Qxd4#
- 1...Re4
- 2.Qxd3#
- 1...Be2
- 2.Sd2#
- 2.Se3#
- 2.Qb5#
- 1...Be4
- 2.Se3#
- 2.Rd4#
- 2.Qb5#
- 2.Qd4#
- 1...Sd5
- 2.Sa5#
- 2.Qb5#
- 1...Qxg3!
- threat
- 1.Qd5+?
- 1...Sxd5
- 2.Sa5#
- 1...Kxd5+!
- 1...Sxd5
- 1.Rg3?
- Keys
- 1.f6!
- threat
- 2.Sa5#
- 2.Qb5#
- 1...Rxg5
- 2.Sd2#
- 1...c6
- 2.Sd6#
- 1...Qf5
- 2.Se3#
- 1...Rf5
- 2.Qd4#
- 1...Bf5
- 2.Qb5#
- 1...Sf5
- 2.Sa5#
- 1...Sc6
- 2.Qd5#
- threat
- 1.f6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 13
- Sets
- Q(e);N_GUARD,XP(G)::S(B)
- Q(e);N_GUARD::S(B),XQ(e)
- R(b);N_GUARD::S(B)
- R(b);N_GUARD::S(B),XR(b)
- R(b);N_GUARD,XR(H)::S(B)
- R(g);N_GUARD,XS(B)::QAR1(K)
- R(g);N_GUARD::QAR1(K)
- R(g);N_GUARD::QAR1(K),XR(g)
- R(g);N_GUARD,XP(G)::QAR1(K)
- B(d);XS(B)::QAB1(K)
- B(d);XP(G)::QAB1(K)
- S(i);XP(G)::S(J)
- S(i);::S(J)
- Tries
- Try
- R(H);
- Threat
- DUALS(2)
- Vars
- Q(e);XP(G)::S(B)
- R(b);N_GUARD,XR(H)::S(B)
- B(d);XS(B)::QAB1(K)
- P(a);XR(A)::S(B)
- P(a);XR(A)::QAB1(K),XB(d)
- P(a);::QAB1(K),XB(d)
- P(a);::S(B)
- R(b);::QAB1(K),XB(d)
- R(g);N_GUARD::QAR1(K)
- R(g);::QAB1(K),XB(d)
- Refutation
- Q(e);XR(H)
- Try
- Q(K);CHECK
- Vars
- S(i);SBLOCK,XQ(K)::S(J)
- Refutation
- K(f);CHECK,P_SPINB(d),S_FLIGHT,XQ(K)
- Try
- Actual
- P(G);
- Threat
- DUALS(2)
- Vars
- R(b);N_GUARD,XR(H)::S(B)
- P(h);N_GUARD::S(J)
- Q(e);N_GUARD::S(B)
- R(g);N_GUARD::QAR1(K)
- B(d);::QAB1(K)
- S(i);::S(J)
- S(i);N_GUARD::QAB1(K)
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).