MESON Chess Problem Database
Problem Display
PID: 242222 (8/2K2p2/2pN2p1/npk5/1p2R1Q1/3R4/B2P1q2/4rrB1 w - - 0 1)
Kisis, Imants J
Sachove umeni (Ceskoslovensky sach), 1970
#2
8 + 10
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qe3
- 2.Re5#
- 1...Qd4
- 2.Bxd4#
- 1...Ra1
- 2.Re5#
- 1...Rb1
- 2.Re5#
- 1...Rc1
- 2.Re5#
- 1...Rd1
- 2.Re5#
- 1...Rxe4
- 2.Sxe4#
- 1...Sb3
- 2.Sb7#
- 1...Sc4
- 2.Sb7#
- 1...Sb7
- 2.Sxb7#
- 1...g5
- 2.Qf5#
- 1...Qe3
- Tries
- 1.Bxf2+?
- 1...Re3
- 2.Bxe3#
- 2.Re5#
- 1...Rxf2!
- 1...Re3
- 1.Rde3?
- threat
- 2.Re5#
- 2.d4#
- 1...Qxe3
- 2.Re5#
- 1...Qxd2
- 2.Rc3#
- 1...Rxe3
- 2.d4#
- 1...Sb3
- 2.Re5#
- 1...b3
- 2.Re5#
- 1...Qg3
- 2.Rc3#
- 2.d4#
- 1...Qg2
- 2.Rc3#
- 2.d4#
- 1...Qh2
- 2.Rc3#
- 2.d4#
- 1...Qf3
- 2.Rc3#
- 2.d4#
- 1...Qf4
- 2.Rc3#
- 2.d4#
- 1...Qf5
- 2.Rc3#
- 2.d4#
- 1...Qf6
- 2.Rc3#
- 1...Rd1
- 2.Re5#
- 1...f6
- 2.d4#
- 1...Sc4!
- threat
- 1.Rxe1?
- threat
- 2.Se4#
- 2.Re5#
- 1...Qe3
- 2.Se4#
- 2.Bxe3#
- 1...Sb3
- 2.Sb7#
- 2.Re5#
- 1...Sc4
- 2.Se4#
- 2.Sb7#
- 1...b3
- 2.Re5#
- 1...f5
- 2.Re5#
- 1...f6
- 2.Se4#
- 1...Rxe1!
- threat
- 1.Rc4+?
- 1...Sxc4
- 2.Sb7#
- 1...bxc4!
- 1...Sxc4
- 1.Qg3?
- threat
- 2.Qe5#
- 1...Rxe4
- 2.Sxe4#
- 1...Sc4
- 2.Sb7#
- 1...f6!
- threat
- 1.Qf4?
- threat
- 2.Qe5#
- 1...Rxe4
- 2.Sxe4#
- 1...Sc4
- 2.Sb7#
- 1...f6!
- threat
- 1.Bxf2+?
- Keys
- 1.Ree3!
- threat
- 2.Se4#
- 2.Qd4#
- 1...Qxe3
- 2.Se4#
- 1...Rxe3
- 2.Qd4#
- 1...Qg3
- 2.Re5#
- 2.Qd4#
- 1...Qh4
- 2.Se4#
- 2.Re5#
- 1...Qg2
- 2.Re5#
- 2.Qd4#
- 1...Qh2
- 2.Re5#
- 2.Qd4#
- 1...Qf3
- 2.Re5#
- 2.Qd4#
- 1...Qf4
- 2.Re5#
- 1...Qf5
- 2.Re5#
- 2.Qd4#
- 1...Qf6
- 2.Se4#
- 2.Re5#
- 1...Sb3
- 2.Sb7#
- 1...b3
- 2.Qd4#
- 1...f5
- 2.Qd4#
- threat
- 1.Ree3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 4
- REMOVED MATES = 9
- Sets
- Q(c);S_CUTR(a)::R(E)
- Q(c);OGATE::B(A),XQ(c)
- R(a);N_GUARD::R(E)
- R(a);XR(E)::S(G),XR(a)
- S(e);N_GUARD::S(G)
- S(e);N_GUARD::S(G),XS(e)
- P(i);N_GUARD::QAR(F)
- Tries
- Try
- B(A);CHECK,XQ(c)
- Refutation
- R(b);XB(A)
- Try
- R(D);N_PINQ(c)
- Threat
- DUALS(2)
- Vars
- Q(c);P_SPINQ(c),XR(D)::R(E)
- Q(c);XP(C)::B(A)+R(D),DCHECK
- R(a);XR(D)::P(C)
- S(e);::R(E)
- P(d);::R(E)
- Q(c);::B(A)+R(D),DCHECK
- R(a);::R(E)
- P(j);::P(C)
- Refutation
- S(e);
- Try
- R(E);XR(a)
- Threat
- DUALS(2)
- Vars
- P(d);::R(E)
- P(j);::R(E)
- P(j);::S(G)
- Refutation
- R(b);XR(E)
- Try
- R(E);CHECK
- Vars
- S(e);XR(E)::S(G)
- Refutation
- P(f);XR(E)
- Try
- Q(F);
- Threat
- QAR2(F)
- Vars
- R(a);XR(E)::S(G),XR(a)
- S(e);N_GUARD::S(G)
- Refutation
- P(j);
- Try
- Q(F);
- Threat
- QAR2(F)
- Vars
- R(a);XR(E)::S(G),XR(a)
- S(e);N_GUARD::S(G)
- Refutation
- P(j);
- Try
- Actual
- R(E);N_PINQ(c)
- Threat
- DUALS(2)
- Vars
- Q(c);P_SPINQ(c),XR(E)::S(G)
- R(a);XR(E)::QAB1(F)
- Q(c);P_PINS(G)::B(A)+R(E),DCHECK
- S(e);N_GUARD::S(G)
- P(d);::QAB1(F)
- P(j);::QAB1(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).