MESON Chess Problem Database
Problem Display
PID: 233212 (2Nn3R/3Qp1p1/4r1k1/4p2p/2N1p2B/4R1K1/8/8 w - - 0 1)
Makaronets, Leonid
Freie Presse, 1973
#2
7 + 8
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Kf5
- 2.Sxe7#
- 1...Kf7
- 2.Qe8#
- 1...Ra6
- 2.Sxe5#
- 1...Rb6
- 2.Sxe5#
- 1...Rc6
- 2.Sxe5#
- 1...Rd6
- 2.Sxe5#
- 1...Rf6
- 2.Sxe5#
- 1...Sc6
- 2.Qxe6#
- 1...Sb7
- 2.Qxe6#
- 1...Sf7
- 2.Qxe6#
- 1...Kf5
- Tries
- 1.Kg2?
- 1...Kf7
- 2.Qe8#
- 1...Ra6
- 2.Sxe5#
- 1...Rb6
- 2.Sxe5#
- 1...Rc6
- 2.Sxe5#
- 1...Rd6
- 2.Sxe5#
- 1...Rf6
- 2.Sxe5#
- 1...Sc6
- 2.Qxe6#
- 1...Sb7
- 2.Qxe6#
- 1...Sf7
- 2.Qxe6#
- 1...Kf5!
- 1...Kf7
- 1.Kh2?
- 1...Kf7
- 2.Qe8#
- 1...Ra6
- 2.Sxe5#
- 1...Rb6
- 2.Sxe5#
- 1...Rc6
- 2.Sxe5#
- 1...Rd6
- 2.Sxe5#
- 1...Rf6
- 2.Sxe5#
- 1...Sc6
- 2.Qxe6#
- 1...Sb7
- 2.Qxe6#
- 1...Sf7
- 2.Qxe6#
- 1...Kf5!
- 1...Kf7
- 1.Kh3?
- 1...Kf7
- 2.Qe8#
- 1...Ra6
- 2.Sxe5#
- 1...Rb6
- 2.Sxe5#
- 1...Rc6
- 2.Sxe5#
- 1...Rd6
- 2.Sxe5#
- 1...Rf6
- 2.Sxe5#
- 1...Sc6
- 2.Qxe6#
- 1...Sb7
- 2.Qxe6#
- 1...Sf7
- 2.Qxe6#
- 1...Kf5!
- 1...Kf7
- 1.S8b6?
- 1...Kf7
- 2.Qe8#
- 1...Rxb6
- 2.Sxe5#
- 1...Rc6
- 2.Sxe5#
- 1...Rd6
- 2.Sxe5#
- 1...Rf6
- 2.Sxe5#
- 1...Sc6
- 2.Qxe6#
- 1...Sb7
- 2.Qxe6#
- 1...Sf7
- 2.Qxe6#
- 1...Kf5!
- 1...Kf7
- 1.S8d6?
- 1...Rxd6
- 2.Sxe5#
- 1...Rf6
- 2.Sxe5#
- 1...Sc6
- 2.Qxe6#
- 2.Qe8#
- 1...Sb7
- 2.Qxe6#
- 2.Qe8#
- 1...Sf7
- 2.Qxe6#
- 1...exd6!
- 1...Rxd6
- 1.Sa7?
- 1...Kf7
- 2.Qe8#
- 1...Ra6
- 2.Sxe5#
- 1...Rb6
- 2.Sxe5#
- 1...Rc6
- 2.Sxe5#
- 1...Rd6
- 2.Sxe5#
- 1...Rf6
- 2.Sxe5#
- 1...Sc6
- 2.Qxe6#
- 1...Sb7
- 2.Qxe6#
- 1...Sf7
- 2.Qxe6#
- 1...Kf5!
- 1...Kf7
- 1.Sxe7+?
- 1...Kf7
- 2.Qe8#
- 1...Rxe7!
- 1...Kf7
- 1.Re1?
- 1...Kf5
- 2.Sxe7#
- 1...Kf7
- 2.Qe8#
- 1...Ra6
- 2.Sxe5#
- 1...Rb6
- 2.Sxe5#
- 1...Rc6
- 2.Sxe5#
- 1...Rd6
- 2.Sxe5#
- 1...Rf6
- 2.Sxe5#
- 1...Sc6
- 2.Qxe6#
- 1...Sb7
- 2.Qxe6#
- 1...Sf7
- 2.Qxe6#
- 1...e3!
- 1...Kf5
- 1.Re2?
- 1...Kf5
- 2.Sxe7#
- 1...Kf7
- 2.Qe8#
- 1...Ra6
- 2.Sxe5#
- 1...Rb6
- 2.Sxe5#
- 1...Rc6
- 2.Sxe5#
- 1...Rd6
- 2.Sxe5#
- 1...Rf6
- 2.Sxe5#
- 1...Sc6
- 2.Qxe6#
- 1...Sb7
- 2.Qxe6#
- 1...Sf7
- 2.Qxe6#
- 1...e3!
- 1...Kf5
- 1.Ra3?
- 1...Kf5
- 2.Sxe7#
- 1...Kf7
- 2.Qe8#
- 1...Ra6
- 2.Sxe5#
- 1...Rb6
- 2.Sxe5#
- 1...Rc6
- 2.Sxe5#
- 1...Rd6
- 2.Sxe5#
- 1...Rf6
- 2.Sxe5#
- 1...Sc6
- 2.Qxe6#
- 1...Sb7
- 2.Qxe6#
- 1...Sf7
- 2.Qxe6#
- 1...e3!
- 1...Kf5
- 1.Rb3?
- 1...Kf5
- 2.Sxe7#
- 1...Kf7
- 2.Qe8#
- 1...Ra6
- 2.Sxe5#
- 1...Rb6
- 2.Sxe5#
- 1...Rc6
- 2.Sxe5#
- 1...Rd6
- 2.Sxe5#
- 1...Rf6
- 2.Sxe5#
- 1...Sc6
- 2.Qxe6#
- 1...Sb7
- 2.Qxe6#
- 1...Sf7
- 2.Qxe6#
- 1...e3!
- 1...Kf5
- 1.Rc3?
- 1...Kf5
- 2.Sxe7#
- 1...Kf7
- 2.Qe8#
- 1...Ra6
- 2.Sxe5#
- 1...Rb6
- 2.Sxe5#
- 1...Rc6
- 2.Sxe5#
- 1...Rd6
- 2.Sxe5#
- 1...Rf6
- 2.Sxe5#
- 1...Sc6
- 2.Qxe6#
- 1...Sb7
- 2.Qxe6#
- 1...Sf7
- 2.Qxe6#
- 1...e3!
- 1...Kf5
- 1.Rxe4?
- 1...Kf7
- 2.Qe8#
- 1...Ra6
- 2.Sxe5#
- 1...Rb6
- 2.Sxe5#
- 1...Rc6
- 2.Sxe5#
- 1...Rd6
- 2.Sxe5#
- 1...Rf6
- 2.Sxe5#
- 1...Sc6
- 2.Qxe6#
- 1...Sb7
- 2.Qxe6#
- 1...Sf7
- 2.Qxe6#
- 1...Kf5!
- 1...Kf7
- 1.Kg2?
- Keys
- 1.Qd5!
- 1...Kf5
- 2.Qxe4#
- 1...Kf7
- 2.Sxe5#
- 1...Ra6
- 2.Sxe7#
- 1...Rb6
- 2.Sxe7#
- 1...Rc6
- 2.Sxe7#
- 1...Rd6
- 2.Sxe7#
- 1...Rf6
- 2.Sxe7#
- 1...Sc6
- 2.Qxe6#
- 1...Sb7
- 2.Qxe6#
- 1...Sf7
- 2.Qxe4#
- 2.Qxe6#
- 1...Kf5
- 1.Qd5!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 7
- ADDED MATES = 0
- REMOVED MATES = 1
- Sets
- K(e);P_SPINR(d),S_FLIGHT::S(F),XP(f)
- K(e);P_SPINP(f),S_FLIGHT::QAB1(E)
- R(d);N_GUARD::S(C),XP(b)
- S(h);N_GUARD::QAR2(E),XR(d)
- Tries
- Try
- K(B);P-FLIGHT
- Vars
- K(e);P_SPINP(f),S_FLIGHT::QAB1(E)
- R(d);N_GUARD::S(C),XP(b)
- S(h);N_GUARD::QAR2(E),XR(d)
- Refutation
- K(e);P_SPINR(d),S_FLIGHT
- Try
- K(B);S_FLIGHT
- Vars
- K(e);P_SPINP(f),S_FLIGHT::QAB1(E)
- R(d);N_GUARD::S(C),XP(b)
- S(h);N_GUARD::QAR2(E),XR(d)
- Refutation
- K(e);P_SPINR(d),S_FLIGHT
- Try
- K(B);P-FLIGHT
- Vars
- K(e);P_SPINP(f),S_FLIGHT::QAB1(E)
- R(d);N_GUARD::S(C),XP(b)
- S(h);N_GUARD::QAR2(E),XR(d)
- Refutation
- K(e);P_SPINR(d),S_FLIGHT
- Try
- S(F);
- Vars
- K(e);P_SPINP(f),S_FLIGHT::QAB1(E)
- R(d);N_GUARD,XS(F)::S(C),XP(b)
- R(d);N_GUARD::S(C),XP(b)
- S(h);N_GUARD::QAR2(E),XR(d)
- Refutation
- K(e);P_SPINR(d),S_FLIGHT
- Try
- S(F);
- Vars
- R(d);N_GUARD,XS(F)::S(C),XP(b)
- R(d);N_GUARD::S(C),XP(b)
- S(h);N_GUARD::QAR2(E),XR(d)
- Refutation
- P(f);XS(F)
- Try
- S(F);
- Vars
- K(e);P_SPINP(f),S_FLIGHT::QAB1(E)
- R(d);N_GUARD::S(C),XP(b)
- S(h);N_GUARD::QAR2(E),XR(d)
- Refutation
- K(e);P_SPINR(d),S_FLIGHT
- Try
- S(F);CHECK,XP(f)
- Vars
- K(e);S_FLIGHT::QAB1(E)
- Refutation
- R(d);XS(F)
- Try
- R(A);
- Vars
- K(e);P_SPINR(d),S_FLIGHT::S(F),XP(f)
- K(e);P_SPINP(f),S_FLIGHT::QAB1(E)
- R(d);N_GUARD::S(C),XP(b)
- S(h);N_GUARD::QAR2(E),XR(d)
- Refutation
- P(a);
- Try
- R(A);
- Vars
- K(e);P_SPINR(d),S_FLIGHT::S(F),XP(f)
- K(e);P_SPINP(f),S_FLIGHT::QAB1(E)
- R(d);N_GUARD::S(C),XP(b)
- S(h);N_GUARD::QAR2(E),XR(d)
- Refutation
- P(a);
- Try
- R(A);
- Vars
- K(e);P_SPINR(d),S_FLIGHT::S(F),XP(f)
- K(e);P_SPINP(f),S_FLIGHT::QAB1(E)
- R(d);N_GUARD::S(C),XP(b)
- S(h);N_GUARD::QAR2(E),XR(d)
- Refutation
- P(a);
- Try
- R(A);
- Vars
- K(e);P_SPINR(d),S_FLIGHT::S(F),XP(f)
- K(e);P_SPINP(f),S_FLIGHT::QAB1(E)
- R(d);N_GUARD::S(C),XP(b)
- S(h);N_GUARD::QAR2(E),XR(d)
- Refutation
- P(a);
- Try
- R(A);
- Vars
- K(e);P_SPINR(d),S_FLIGHT::S(F),XP(f)
- K(e);P_SPINP(f),S_FLIGHT::QAB1(E)
- R(d);N_GUARD::S(C),XP(b)
- S(h);N_GUARD::QAR2(E),XR(d)
- Refutation
- P(a);
- Try
- R(A);XP(a)
- Vars
- K(e);P_SPINP(f),S_FLIGHT::QAB1(E)
- R(d);N_GUARD::S(C),XP(b)
- S(h);N_GUARD::QAR2(E),XR(d)
- Refutation
- K(e);P_SPINR(d),S_FLIGHT
- Try
- Actual
- Q(E);
- Vars
- K(e);P_SPINP(b),S_FLIGHT::QAB1(E),XP(a)
- K(e);P_SPINR(d),S_FLIGHT::S(C),XP(b)
- R(d);N_GUARD::S(F),XP(f)
- S(h);N_GUARD::QAR2(E),XR(d)
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).