MESON Chess Problem Database
Problem Display
PID: 68202 (5nK1/1q1p1RQp/8/3NN3/4k2r/2r5/B1n2b1B/3R1b2 w - - 0 1)
Maleika, Gerhard
Phenix, 1997
#2
8 + 10
SOLUTION
- SOUND
- Sets
- 1...Rxh2
- 2.Rf4#
- 1...Rh3
- 2.Rf4#
- 2.Qg4#
- 1...Rf4
- 2.Rxf4#
- 1...Rg4
- 2.Qxg4#
- 1...Rh5
- 2.Rf4#
- 2.Qg4#
- 1...Rh6
- 2.Rf4#
- 2.Qg4#
- 1...Be3
- 2.Sxc3#
- 1...Se3
- 2.Sxc3#
- 1...Rxh2
- Tries
- 1.Sf3?
- threat
- 2.Sg5#
- 2.Qe5#
- 1...Rxf3
- 2.Qe5#
- 1...Rf4
- 2.Sg5#
- 2.Rxf4#
- 1...Qc7
- 2.Sg5#
- 1...Qb8
- 2.Sg5#
- 1...Rg4
- 2.Qxg4#
- 1...Rh5
- 2.Rf4#
- 2.Qg4#
- 1...Be3
- 2.Sxc3#
- 2.Qe5#
- 1...Bg3
- 2.Sg5#
- 1...Bd4
- 2.Sg5#
- 1...Se6
- 2.Qe5#
- 1...Sg6
- 2.Sg5#
- 1...d6
- 2.Sg5#
- 1...h6
- 2.Qe5#
- 1...Qxd5!
- threat
- 1.Sc4?
- threat
- 2.Sd6#
- 2.Sxc3#
- 2.Qe5#
- 1...Rxc4
- 2.Qe5#
- 1...Bxc4
- 2.Qe5#
- 1...Rd3
- 2.Sd6#
- 2.Qe5#
- 1...Rf4
- 2.Rxf4#
- 1...Bd4
- 2.Sd6#
- 1...Qa6
- 2.Sxc3#
- 2.Qe5#
- 1...Qc6
- 2.Sxc3#
- 2.Qe5#
- 1...Qb2
- 2.Sd6#
- 2.Qe5#
- 1...Qb3
- 2.Sd6#
- 2.Qe5#
- 1...Qb4
- 2.Qe5#
- 1...Qb6
- 2.Sxc3#
- 2.Qe5#
- 1...Qc7
- 2.Sxc3#
- 1...Qb8
- 2.Sxc3#
- 1...Ra3
- 2.Sd6#
- 2.Qe5#
- 1...Rb3
- 2.Sd6#
- 2.Qe5#
- 1...Re3
- 2.Sd6#
- 2.Qe5#
- 1...Rf3
- 2.Sd6#
- 2.Qe5#
- 1...Rg3
- 2.Sd6#
- 1...Rch3
- 2.Sd6#
- 2.Qe5#
- 1...Rhh3
- 2.Sd6#
- 2.Rf4#
- 2.Qe5#
- 2.Qg4#
- 1...Rg4
- 2.Sd6#
- 2.Sxc3#
- 2.Qxg4#
- 1...Rh5
- 2.Sd6#
- 2.Sxc3#
- 2.Rf4#
- 2.Qg4#
- 1...Rh6
- 2.Sxc3#
- 2.Rf4#
- 2.Qe5#
- 2.Qg4#
- 1...Be1
- 2.Sd6#
- 2.Qe5#
- 1...Bg3
- 2.Sxc3#
- 1...Bc5
- 2.Sxc3#
- 2.Qe5#
- 1...Sg6
- 2.Sd6#
- 2.Sxc3#
- 1...d6
- 2.Sxd6#
- 2.Sxc3#
- 1...Qxd5!
- threat
- 1.Qg2+?
- 1...Rf3
- 2.Qxf3#
- 1...Bxg2!
- 1...Rf3
- 1.Sf3?
- Keys
- 1.Sg4!
- threat
- 2.Sxf2#
- 2.Sxc3#
- 2.Rf4#
- 2.Qe5#
- 1...Qxd5
- 2.Bxd5#
- 1...Rxh2
- 2.Sxc3#
- 2.Rf4#
- 2.Qe5#
- 1...Rxg4
- 2.Qxg4#
- 1...Qc6
- 2.Sxf2#
- 2.Rf4#
- 2.Qe5#
- 1...Qc8
- 2.Sxf2#
- 2.Rf4#
- 2.Qe5#
- 1...Qb2
- 2.Sxf2#
- 2.Rf4#
- 2.Qe5#
- 1...Qb3
- 2.Sxf2#
- 2.Rf4#
- 2.Qe5#
- 1...Qb4
- 2.Sxf2#
- 2.Rf4#
- 2.Qe5#
- 1...Qb6
- 2.Sxc3#
- 2.Rf4#
- 2.Qe5#
- 1...Qa7
- 2.Sxc3#
- 2.Rf4#
- 2.Qe5#
- 1...Qc7
- 2.Sxf2#
- 1...Qb8
- 2.Sxf2#
- 2.Sxc3#
- 1...Ra3
- 2.Sxf2#
- 2.Rf4#
- 2.Qe5#
- 1...Rb3
- 2.Sxf2#
- 2.Rf4#
- 2.Qe5#
- 1...Rd3
- 2.Sxf2#
- 2.Rf4#
- 2.Qe5#
- 1...Re3
- 2.Sxf2#
- 2.Rf4#
- 2.Qe5#
- 1...Rf3
- 2.Qe5#
- 1...Rg3
- 2.Sxf2#
- 2.Rf4#
- 2.Qe5#
- 1...Rch3
- 2.Sxf2#
- 2.Rf4#
- 2.Qe5#
- 1...Rc4
- 2.Sxf2#
- 2.Rf4#
- 2.Qe5#
- 1...Rc5
- 2.Sxf2#
- 2.Rf4#
- 2.Qe5#
- 1...Rc6
- 2.Sxf2#
- 2.Rf4#
- 2.Qe5#
- 1...Rc7
- 2.Sxf2#
- 2.Rf4#
- 2.Qe5#
- 1...Rc8
- 2.Sxf2#
- 2.Rf4#
- 2.Qe5#
- 1...Rhh3
- 2.Sxf2#
- 2.Rf4#
- 2.Qe5#
- 1...Rh5
- 2.Sxf2#
- 2.Sxc3#
- 2.Rf4#
- 1...Be1
- 2.Rf4#
- 2.Qe5#
- 1...Bg1
- 2.Sxc3#
- 2.Rf4#
- 2.Qe5#
- 1...Be3
- 2.Sxc3#
- 2.Qe5#
- 1...Bg3
- 2.Sxc3#
- 1...Bd4
- 2.Rf4#
- 1...Bc5
- 2.Sxc3#
- 2.Rf4#
- 2.Qe5#
- 1...Bb6
- 2.Sxc3#
- 2.Rf4#
- 2.Qe5#
- 1...Ba7
- 2.Sxc3#
- 2.Rf4#
- 2.Qe5#
- 1...Se6
- 2.Sxf2#
- 2.Sxc3#
- 2.Qe5#
- 1...Sg6
- 2.Sxf2#
- 2.Sxc3#
- 1...d6
- 2.Sxf2#
- 2.Sxc3#
- 2.Rf4#
- threat
- 1.Sg4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 4
- Sets
- R(f);N_GUARD,XB(C)::R1(F)
- R(f);N_GUARD::R1(F),XR(f)
- R(f);N_GUARD,P_PINQ(G)::QAR2(G),XR(f)
- B(c);SBLOCK::S(D),XR(d)
- S(b);SBLOCK::S(D),XR(d)
- Tries
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- R(d);XS(E)::QAR1(G)
- Q(g);::S(E)
- R(f);N_GUARD,P_PINQ(G)::QAR2(G),XR(f)
- B(c);::S(E)
- S(j);::QAR1(G)
- S(j);::S(E)
- P(h);::S(E)
- P(i);::QAR1(G)
- Refutation
- Q(g);P_PINR(F),XS(D)
- Try
- S(E);
- Threat
- DUALS(3)
- Vars
- R(d);XS(E)::QAR1(G)
- B(a);XS(E)::QAR1(G)
- R(f);N_GUARD::R1(F),XR(f)
- B(c);::S(E)
- Q(g);::QAR1(G)
- Q(g);::S(D),XR(d)
- R(d);P_PINQ(G)::S(E)
- B(c);::S(D),XR(d)
- Refutation
- Q(g);P_PINR(F),XS(D)
- Try
- Q(G);CHECK
- Vars
- R(d);N_GUARD,P_SPINR(d)::QAB1(G),XR(d)
- Refutation
- B(a);XQ(G)
- Try
- Actual
- S(E);
- Threat
- DUALS(4)
- Vars
- Q(g);OGATE,P_PINR(F),XS(D)::B(B),XQ(g)
- R(f);OGATE,P_PINQ(G),XS(E)::QAR2(G),XR(f)
- Q(g);::S(E),XB(c)
- R(d);::QAR1(G)
- B(c);::S(D),XR(d)
- B(c);::R1(F)
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).