MESON Chess Problem Database
Problem Display
PID: 268242 (b1RR4/6N1/3q1p2/2rN1Q1K/1n1k2p1/2n4p/2BP3B/8 w - - 0 1)
Caliman, Georghe
4th Comm., KeyStip 20. Ty., 1978
#2
9 + 9
SOLUTION
- SOUND
- Sets
- 1...Rc4
- 2.Bg1#
- 1...Ra5
- 2.Bg1#
- 2.dxc3#
- 1...Rb5
- 2.Bg1#
- 2.dxc3#
- 1...Rxd5
- 2.Bg1#
- 1...Sb1
- 2.Qe4#
- 1...Sd1
- 2.Qe4#
- 1...Sca2
- 2.Qe4#
- 1...Se2
- 2.Qe4#
- 1...Sa4
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sb5
- 2.Qe4#
- 1...Scxd5
- 2.Qe4#
- 1...Sba2
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...Sbxd5
- 2.Qd3#
- 1...Sa6
- 2.Qd3#
- 1...Sc6
- 2.Qd3#
- 1...Rc4
- Tries
- 1.Se3?
- threat
- 2.Se6#
- 2.Qxc5#
- 1...Rxf5+
- 2.Sgxf5#
- 1...Rxc8
- 2.Se6#
- 1...Sxc2
- 2.Se6#
- 1...Qd5
- 2.Se6#
- 1...Rc4
- 2.Se6#
- 2.Rxc4#
- 2.Qxf6#
- 1...Ra5
- 2.Se6#
- 2.Rc4#
- 1...Rb5
- 2.Se6#
- 2.Rc4#
- 1...Rd5
- 2.Rc4#
- 1...Re5
- 2.Rc4#
- 1...Rc6
- 2.Se6#
- 1...Rc7
- 2.Se6#
- 1...Bc6
- 2.Se6#
- 1...Sa4
- 2.Se6#
- 1...Se4
- 2.Se6#
- 1...Scd5
- 2.Qe4#
- 1...Sd3
- 2.Se6#
- 1...Sbd5
- 2.Qd3#
- 1...Sa6
- 2.Se6#
- 1...Sc6
- 2.Se6#
- 1...Bd5!
- threat
- 1.Qxg4+?
- 1...Kxd5
- 2.Rxd6#
- 1...Se4
- 2.Qxe4#
- 1...Qf4!
- 1...Kxd5
- 1.Qf2+?
- 1...Kxd5
- 2.Rxc5#
- 2.Qxc5#
- 1...Kc4!
- 1...Kxd5
- 1.Qf4+?
- 1...Kxd5
- 2.Rxd6#
- 1...Se4
- 2.Qxe4#
- 1...Qxf4!
- 1...Kxd5
- 1.dxc3+?
- 1...Rxc3
- 2.Qe4#
- 1...Kc4!
- 1...Rxc3
- 1.Se3?
- Keys
- 1.Sb6!
- threat
- 2.Se6#
- 2.Bg1#
- 2.Qxc5#
- 1...Rxf5+
- 2.Sxf5#
- 1...Rxc8
- 2.Se6#
- 2.Bg1#
- 2.Qf2#
- 1...Sxc2
- 2.Se6#
- 1...Qd5
- 2.Se6#
- 2.Bg1#
- 1...Rc4
- 2.Se6#
- 2.Bg1#
- 2.Rxc4#
- 2.Qf2#
- 2.Qxf6#
- 1...Ra5
- 2.Se6#
- 2.Bg1#
- 2.Rc4#
- 1...Rb5
- 2.Se6#
- 2.Bg1#
- 2.Rc4#
- 1...Rd5
- 2.Bg1#
- 2.Rc4#
- 1...Re5
- 2.Rc4#
- 1...Rc6
- 2.Se6#
- 2.Bg1#
- 2.Qf2#
- 1...Rc7
- 2.Se6#
- 2.Bg1#
- 2.Qf2#
- 1...Bd5
- 2.Bg1#
- 2.Qf2#
- 1...Bc6
- 2.Se6#
- 2.Bg1#
- 1...Sd1
- 2.Se6#
- 2.Qxc5#
- 1...Se2
- 2.Se6#
- 2.Qxc5#
- 1...Sa4
- 2.Se6#
- 2.Bg1#
- 1...Se4
- 2.Se6#
- 1...Scd5
- 2.Qe4#
- 1...Sd3
- 2.Se6#
- 1...Sbd5
- 2.Qd3#
- 1...Sa6
- 2.Se6#
- 2.Bg1#
- 1...Sc6
- 2.Se6#
- 2.Bg1#
- threat
- 1.Sb6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 3
- REMOVED MATES = 11
- Sets
- R(f);::B(C)
- R(f);P_PINQ(E),XS(D)::B(C)
- S(a);N_GUARD::QAR1(E)
- S(a);N_GUARD::QAR1(E),XS(a)
- S(a);N_GUARD,XS(D)::QAR1(E)
- S(c);N_GUARD::QAR1(E)
- S(c);N_GUARD::QAR1(E),XS(c)
- S(c);N_GUARD,SBLOCK,XS(D)::QAR1(E)
- Tries
- Try
- S(D);P_PINQ(g),P_SPINQ(E)
- Threat
- DUALS(2)
- Vars
- R(f);CHECK,XQ(E)::S(G),XR(f)
- R(f);N_PINQ(E),XR(H)::S(G)
- S(c);XB(A)::S(G)
- Q(g);::S(G)
- R(f);N_SPINQ(g),OGATE::R1(H)
- R(f);OGATE::R1(H)
- R(f);N_PINQ(E)::S(G)
- B(i);::S(G)
- S(a);::S(G)
- S(a);N_PINQ(E),N_SPINQ(g)::QAR1(E)
- S(c);::S(G)
- S(c);N_PINQ(E),N_SPINQ(g)::QAR1(E)
- Refutation
- B(i);N_PINQ(E),N_SPINQ(g)
- Try
- Q(E);CHECK,P_SPINS(D),XP(e)
- Vars
- K(d);P-FLIGHT,P_SPINQ(g),S_CUTS(a),XS(D)::R1(I),XQ(g)
- S(a);N_GUARD,P_SPINS(a)::QAR1(E),XS(a)
- Refutation
- Q(g);P_SPINQ(g)
- Try
- Q(E);CHECK,P_SPINS(D)
- Refutation
- K(d);P-FLIGHT,P_SPINR(f)
- Try
- Q(E);CHECK,P_SPINS(D)
- Vars
- K(d);P-FLIGHT,P_SPINQ(g),S_CUTS(a),XS(D)::R1(I),XQ(g)
- S(a);N_GUARD,P_SPINS(a)::QAR1(E),XS(a)
- Refutation
- Q(g);XQ(E)
- Try
- P(B);CHECK,XS(a)
- Vars
- R(f);XP(B)::QAR1(E)
- Refutation
- K(d);P-FLIGHT,P_SPINR(f)
- Try
- Actual
- S(D);P_PINQ(g),P_SPINQ(E)
- Threat
- DUALS(3)
- Vars
- R(f);CHECK,XQ(E)::S(G),XR(f)
- S(c);XB(A)::S(G)
- R(f);OGATE::R1(H)
- S(a);::S(G)
- S(a);N_PINQ(E),N_SPINQ(g)::QAR1(E)
- S(c);::S(G)
- S(c);N_PINQ(E),N_SPINQ(g)::QAR1(E)
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).