MESON Chess Problem Database
Problem Display
PID: 231872 (5B1r/1Nb1p1P1/nN2k3/1KP2R2/2R3P1/8/B1p1q3/3bQ3 w - - 0 1)
Bulanov, Vladimir
Kudesnik, 2015
#2
11 + 8
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qxe1
- 2.Rxc2#
- 2.Rc3#
- 2.Ra4#
- 2.Rb4#
- 2.Rd4#
- 2.Re4#
- 2.Rcf4#
- 1...Qe3
- 2.Rxc2#
- 2.Rc3#
- 2.Ra4#
- 2.Rb4#
- 2.Rd4#
- 2.Re4#
- 2.Rcf4#
- 1...Qe4
- 2.Rxc2#
- 2.Rc3#
- 2.Ra4#
- 2.Rb4#
- 2.Rd4#
- 2.Rxe4#
- 1...Qe5
- 2.Rxc2#
- 2.Rc3#
- 2.Ra4#
- 2.Rb4#
- 2.Rd4#
- 2.Re4#
- 2.Rcf4#
- 1...Rh1
- 2.g8Q#
- 2.g8B#
- 1...Rh2
- 2.g8Q#
- 2.g8B#
- 1...Rh3
- 2.g8Q#
- 2.g8B#
- 1...Rh4
- 2.g8Q#
- 2.g8B#
- 1...Rh5
- 2.g8Q#
- 2.g8B#
- 1...Rh6
- 2.g8Q#
- 2.g8B#
- 1...Rxf8
- 2.gxf8S#
- 1...Bh2
- 2.Sd8#
- 1...Bg3
- 2.Sd8#
- 1...Bf4
- 2.Sd8#
- 1...Be5
- 2.Sd8#
- 1...Bd6
- 2.Sd8#
- 1...Bb8
- 2.Sd8#
- 1...Bd8
- 2.Sxd8#
- 1...Qxe1
- Tries
- 1.Ka4?
- threat
- 2.Rxc2#
- 2.Rc3#
- 2.Rb4#
- 2.Rd4#
- 2.Re4#
- 2.Rcf4#
- 1...Sxc5+
- 2.Rcxc5#
- 1...c1Q+
- 2.Rc2#
- 1...c1B+
- 2.Rc2#
- 1...c1R+
- 2.Rc2#
- 1...Bxb6
- 2.Rd4#
- 1...Qe4
- 2.Rb4#
- 2.Rd4#
- 2.Rxe4#
- 1...Rh3
- 2.Rc3#
- 2.Re4#
- 2.g8Q#
- 2.g8B#
- 1...Bf4
- 2.Sd8#
- 2.Rxc2#
- 2.Rc3#
- 2.Rb4#
- 2.Rd4#
- 2.Re4#
- 2.Rcxf4#
- 1...Be5
- 2.Sd8#
- 1...Sb4
- 2.Rxb4#
- 2.Re4#
- 1...c1S+!
- threat
- 1.Ka5?
- threat
- 2.Rxc2#
- 2.Rc3#
- 2.Ra4#
- 2.Rb4#
- 2.Rd4#
- 2.Re4#
- 2.Rcf4#
- 1...Qxe1+
- 2.Rc3#
- 2.Rb4#
- 1...Sxc5
- 2.Re4#
- 2.Rcxc5#
- 1...c1Q
- 2.Rc2#
- 2.Re4#
- 1...c1S
- 2.Re4#
- 1...c1B
- 2.Rc2#
- 2.Re4#
- 1...c1R
- 2.Rc2#
- 2.Re4#
- 1...Qe4
- 2.Rxc2#
- 2.Rc3#
- 2.Ra4#
- 2.Rb4#
- 2.Rd4#
- 2.Rxe4#
- 1...Rh3
- 2.Rc3#
- 2.Re4#
- 2.g8Q#
- 2.g8B#
- 1...Bf4
- 2.Sd8#
- 2.Rxc2#
- 2.Rc3#
- 2.Ra4#
- 2.Rb4#
- 2.Rd4#
- 2.Re4#
- 2.Rcxf4#
- 1...Be5
- 2.Sd8#
- 1...Sb4
- 2.Rxb4#
- 2.Re4#
- 1...Bxb6+!
- threat
- 1.Kc6?
- threat
- 2.Rxc2#
- 2.Rc3#
- 2.Ra4#
- 2.Rb4#
- 2.Rd4#
- 2.Re4#
- 2.Rcf4#
- 1...Qe4+
- 2.Rxe4#
- 1...Sb4+
- 2.Rxb4#
- 1...Sxc5
- 2.Sxc5#
- 2.Re4#
- 2.Rcxc5#
- 1...c1Q
- 2.Rc2#
- 2.Re4#
- 1...c1S
- 2.Re4#
- 1...c1B
- 2.Rc2#
- 2.Re4#
- 1...c1R
- 2.Rc2#
- 2.Re4#
- 1...Rh3
- 2.Rc3#
- 2.Re4#
- 2.g8Q#
- 2.g8B#
- 1...Bf4
- 2.Sd8#
- 2.Rxc2#
- 2.Rc3#
- 2.Ra4#
- 2.Rb4#
- 2.Rd4#
- 2.Re4#
- 2.Rcxf4#
- 1...Be5
- 2.Sd8#
- 1...Sb8+!
- threat
- 1.Qd2?
- threat
- 2.Qd5#
- 2.Qd7#
- 1...Qxc4+
- 2.Bxc4#
- 1...Qxd2
- 2.Rd4#
- 2.Re4#
- 1...Bxb6
- 2.Qd5#
- 1...Sxc5
- 2.Sxc5#
- 2.Qd5#
- 1...Qf3
- 2.Re4#
- 2.Qd7#
- 1...Qg2
- 2.Re4#
- 2.Qd7#
- 1...Qe4
- 2.Rxe4#
- 2.Qd7#
- 1...Qe5
- 2.Re4#
- 2.Qd7#
- 1...Bd6
- 2.Sd8#
- 2.Qd5#
- 1...Sb4
- 2.Qd7#
- 1...Sb8
- 2.Qd5#
- 1...Qd3!
- threat
- 1.Qxe2+?
- 1...Be5
- 2.Sd8#
- 2.Rxc2#
- 2.Rc3#
- 2.Ra4#
- 2.Rb4#
- 2.Rd4#
- 2.Re4#
- 2.Rcf4#
- 2.Qxe5#
- 1...Bxe2!
- 1...Be5
- 1.gxh8Q?
- threat
- 2.Qh6#
- 2.Qg8#
- 1...c1Q
- 2.Qg8#
- 1...c1B
- 2.Qg8#
- 1...Bf4
- 2.Sd8#
- 2.Qg8#
- 1...Be5
- 2.Sd8#
- 2.Qg8#
- 1...Bxb6!
- threat
- 1.Ka4?
- Keys
- 1.Qh4!
- threat
- 2.Qxe7#
- 1...Qxc4+
- 2.Bxc4#
- 1...Qxg4
- 2.Rcf4#
- 1...Rxh4
- 2.g8Q#
- 2.g8B#
- 1...Rxf8
- 2.gxf8S#
- 1...Bd6
- 2.Sd8#
- 1...Bd8
- 2.Sxd8#
- threat
- 1.Qh4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 5
- Sets
- R(h);N_GUARD::P=Q
- R(h);OGATE,XB(K)::PXR(h)=S
- B(f);N_GUARD::S(I)
- B(f);N_GUARD,N_SPINQ(c)::S(I)
- B(f);N_GUARD::S(I),XB(f)
- Tries
- Try
- K(E);N_SPINR(C),S_FLIGHT
- Threat
- DUALS(6)
- Vars
- S(d);CHECK,OGATE,XP(F)::B(B)+R(C),XS(d)
- P(b);CHECK::B(B)+R(C)
- B(f);XS(H)::B(B)+R(C)
- B(f);N_GUARD,N_SPINQ(c)::S(I)
- Refutation
- P(b);CHECK
- Try
- K(E);N_SPINR(C),P-FLIGHT,P_SPINS(H)
- Threat
- DUALS(7)
- Vars
- P(b);::B(B)+R(C),DCHECK
- B(f);N_GUARD,N_PINS(H),N_SPINQ(c)::S(I)
- Refutation
- B(f);CHECK,XS(H)
- Try
- K(E);N_SPINR(C),S_FLIGHT
- Threat
- DUALS(7)
- Vars
- Q(c);CHECK::B(B)+R(C),DCHECK,XQ(c)
- S(d);CHECK::B(B)+R(C),XS(d)
- P(b);::B(B)+R(C),DCHECK
- B(f);N_GUARD,N_SPINQ(c)::S(I)
- Refutation
- S(d);CHECK
- Try
- Q(A);N_PINQ(c)
- Threat
- DUALS(2)
- Vars
- Q(c);CHECK,OGATE,P_SPINQ(c),XR(C)::B(B),XQ(c)
- B(f);XS(H)::QAB1(A)
- S(d);::QAB1(A)
- Refutation
- Q(c);
- Try
- Q(A);CHECK,N_SPINR(C),XQ(c)
- Refutation
- B(a);P_PINR(C),XQ(A)
- Try
- P(J);XR(h)
- Threat
- DUALS(2)
- Vars
- P(b);::QAB(J)
- Refutation
- B(f);XS(H)
- Try
- Actual
- Q(A);N_PINQ(c)
- Threat
- QAR1(A),XP(g)
- Vars
- Q(c);CHECK,OGATE,P_SPINQ(c),XR(C)::B(B),XQ(c)
- Q(c);N_PINR(C),XP(D)::B(B)+R(C)
- R(h);N_GUARD,XQ(A)::P=Q
- R(h);OGATE,XB(K)::PXR(h)=S
- B(f);N_GUARD::S(I)
- B(f);N_GUARD::S(I),XB(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).