MESON Chess Problem Database
Problem Display
PID: 86965 (1KBR4/1P6/6Q1/2p1P2p/2p5/2n2k1N/3PRp1B/4rr2 w - - 0 1)
Kovalenko, Boris
3rd HM., Konk. Vs. KFiS, 1955
#2
10 + 8
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Kxe2
- 2.Qxh5#
- 1...Ra1
- 2.Re3#
- 1...Rb1
- 2.Re3#
- 1...Rc1
- 2.Re3#
- 1...Rd1
- 2.Re3#
- 1...Rxe2
- 2.Rf8#
- 1...Rg1
- 2.Rxf2#
- 1...Rh1
- 2.Rxf2#
- 1...Sb1
- 2.Qe4#
- 1...Sd1
- 2.Qe4#
- 1...Sa2
- 2.Qe4#
- 1...Sxe2
- 2.Qc6#
- 1...Sa4
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sb5
- 2.Qe4#
- 1...Sd5
- 2.Qe4#
- 1...h4
- 2.Qg4#
- 1...Kxe2
- Tries
- 1.Ka8?
- 1...Kxe2
- 2.Qxh5#
- 1...Rxe2
- 2.Rf8#
- 1...Sxe2
- 2.Qc6#
- 1...Rb1
- 2.Re3#
- 1...Rc1
- 2.Re3#
- 1...Rd1
- 2.Re3#
- 1...Rg1
- 2.Rxf2#
- 1...Rh1
- 2.Rxf2#
- 1...Sb1
- 2.Qe4#
- 1...Sd1
- 2.Qe4#
- 1...Sa2
- 2.Qe4#
- 1...Sa4
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sb5
- 2.Qe4#
- 1...Sd5
- 2.Qe4#
- 1...h4
- 2.Qg4#
- 1...Ra1+!
- 1...Kxe2
- 1.Sf4?
- threat
- 2.Qxh5#
- 2.Qg2#
- 2.Qg3#
- 1...Rxe2
- 2.Qg2#
- 1...Sxe2
- 2.Qg2#
- 2.Qc6#
- 1...Se4
- 2.Qxe4#
- 2.Qxh5#
- 2.Qg2#
- 1...h4
- 2.Bg4#
- 2.Qh5#
- 2.Qg2#
- 2.Qg4#
- 1...Rg1!
- threat
- 1.Sg5+?
- 1...Kxe2
- 2.Qxh5#
- 1...Kg2!
- 1...Kxe2
- 1.Bf4?
- 1...Kxe2
- 2.Qxh5#
- 1...Sxe2
- 2.Qc6#
- 1...Ra1
- 2.Re3#
- 1...Rb1
- 2.Re3#
- 1...Rc1
- 2.Re3#
- 1...Rd1
- 2.Re3#
- 1...Rg1
- 2.Rxf2#
- 1...Rh1
- 2.Rxf2#
- 1...Sb1
- 2.Qe4#
- 1...Sd1
- 2.Qe4#
- 1...Sa2
- 2.Qe4#
- 1...Sa4
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sb5
- 2.Qe4#
- 1...Sd5
- 2.Qe4#
- 1...h4
- 2.Qg4#
- 1...Rxe2!
- 1...Kxe2
- 1.Bd7?
- 1...Rxe2
- 2.Rf8#
- 1...Sxe2
- 2.Bc6#
- 2.Qc6#
- 1...Ra1
- 2.Re3#
- 1...Rb1
- 2.Re3#
- 1...Rc1
- 2.Re3#
- 1...Rd1
- 2.Re3#
- 1...Rg1
- 2.Rxf2#
- 1...Rh1
- 2.Rxf2#
- 1...Sb1
- 2.Qe4#
- 1...Sd1
- 2.Qe4#
- 1...Sa2
- 2.Qe4#
- 1...Sa4
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sb5
- 2.Qe4#
- 1...Sd5
- 2.Qe4#
- 1...h4
- 2.Qg4#
- 1...Kxe2!
- 1...Rxe2
- 1.Rd4?
- 1...Kxe2
- 2.Qxh5#
- 1...Rxe2
- 2.Rf4#
- 2.Qg3#
- 1...Sxe2
- 2.Qe4#
- 2.Qc6#
- 1...Ra1
- 2.Re3#
- 1...Rb1
- 2.Re3#
- 1...Rc1
- 2.Re3#
- 1...Rd1
- 2.Re3#
- 1...Rg1
- 2.Rxf2#
- 1...Rh1
- 2.Rxf2#
- 1...Sb1
- 2.Qe4#
- 1...Sd1
- 2.Qe4#
- 1...Sa2
- 2.Qe4#
- 1...Sa4
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sb5
- 2.Qe4#
- 1...Sd5
- 2.Qe4#
- 1...h4
- 2.Qg4#
- 1...cxd4!
- 1...Kxe2
- 1.Rd6?
- 1...Kxe2
- 2.Qxh5#
- 1...Rxe2
- 2.Rf6#
- 1...Ra1
- 2.Re3#
- 1...Rb1
- 2.Re3#
- 1...Rc1
- 2.Re3#
- 1...Rd1
- 2.Re3#
- 1...Rg1
- 2.Rxf2#
- 1...Rh1
- 2.Rxf2#
- 1...Sb1
- 2.Qe4#
- 1...Sd1
- 2.Qe4#
- 1...Sa2
- 2.Qe4#
- 1...Sa4
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sb5
- 2.Qe4#
- 1...Sd5
- 2.Qe4#
- 1...h4
- 2.Qg4#
- 1...Sxe2!
- 1...Kxe2
- 1.Re8?
- 1...Rxe2
- 2.Rf8#
- 1...Sxe2
- 2.Qc6#
- 1...Ra1
- 2.Re3#
- 1...Rb1
- 2.Re3#
- 1...Rc1
- 2.Re3#
- 1...Rd1
- 2.Re3#
- 1...Rg1
- 2.Rxf2#
- 1...Rh1
- 2.Rxf2#
- 1...Sb1
- 2.Qe4#
- 1...Sd1
- 2.Qe4#
- 1...Sa2
- 2.Qe4#
- 1...Sa4
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sb5
- 2.Qe4#
- 1...Sd5
- 2.Qe4#
- 1...h4
- 2.Qg4#
- 1...Kxe2!
- 1...Rxe2
- 1.Rg8?
- threat
- 2.Qxh5#
- 1...Rxe2
- 2.Rf8#
- 2.Qf5#
- 2.Qg2#
- 1...Sxe2
- 2.Qg2#
- 2.Qc6#
- 1...Rg1
- 2.Rxf2#
- 1...h4
- 2.Qh5#
- 2.Qg4#
- 1...Kxe2!
- threat
- 1.Rh8?
- 1...Rxe2
- 2.Rf8#
- 1...Sxe2
- 2.Qc6#
- 1...Ra1
- 2.Re3#
- 1...Rb1
- 2.Re3#
- 1...Rc1
- 2.Re3#
- 1...Rd1
- 2.Re3#
- 1...Rg1
- 2.Rxf2#
- 1...Rh1
- 2.Rxf2#
- 1...Sb1
- 2.Qe4#
- 1...Sd1
- 2.Qe4#
- 1...Sa2
- 2.Qe4#
- 1...Sa4
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sb5
- 2.Qe4#
- 1...Sd5
- 2.Qe4#
- 1...h4
- 2.Qg4#
- 1...Kxe2!
- 1...Rxe2
- 1.Qf5+?
- 1...Kxe2
- 2.Qxh5#
- 1...Kg2!
- 1...Kxe2
- 1.Qf7+?
- 1...Kxe2
- 2.Qxh5#
- 1...Kg2!
- 1...Kxe2
- 1.dxc3?
- threat
- 2.Qe4#
- 1...Kxe2
- 2.Qe4#
- 1...Rxe2!
- threat
- 1.Ka8?
- Keys
- 1.Be6!
- 1...Kxe2
- 2.Qxh5#
- 1...Rxe2
- 2.Rf8#
- 1...Sxe2
- 2.Bd5#
- 1...Ra1
- 2.Re3#
- 1...Rb1
- 2.Re3#
- 1...Rc1
- 2.Re3#
- 1...Rd1
- 2.Re3#
- 1...Rg1
- 2.Rxf2#
- 1...Rh1
- 2.Rxf2#
- 1...Sb1
- 2.Qe4#
- 1...Sd1
- 2.Qe4#
- 1...Sa2
- 2.Qe4#
- 1...Sa4
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sb5
- 2.Qe4#
- 1...Sd5
- 2.Qe4#
- 1...h4
- 2.Qg4#
- 1...Kxe2
- 1.Be6!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- K(e);S_FLIGHT,XR(B)::QAB(F),XP(h)
- R(a);N_GUARD::R1(B)
- R(a);N_GUARD,P_PINP(G)::R1(B)
- R(a);SBLOCK,XR(B)::R(J)
- R(b);N_GUARD::R1(B),XP(c)
- S(d);N_GUARD::QAB1(F)
- S(d);N_GUARD,SBLOCK,XR(B)::QAB(F)
- S(d);N_GUARD::QAB1(F),XS(d)
- P(h);N_GUARD::QAB1(F)
- Tries
- Try
- K(H);P-FLIGHT
- Vars
- K(e);S_FLIGHT,XR(B)::QAB(F),XP(h)
- R(a);SBLOCK,XR(B)::R(J)
- S(d);N_GUARD,SBLOCK,XR(B)::QAB(F)
- R(a);N_GUARD::R1(B)
- R(b);N_GUARD::R1(B),XP(c)
- S(d);N_GUARD::QAB1(F)
- S(d);N_GUARD::QAB1(F),XS(d)
- P(h);N_GUARD::QAB1(F)
- Refutation
- R(a);CHECK
- Try
- S(D);
- Threat
- DUALS(3)
- Vars
- R(a);XR(B)::QAB1(F)
- Refutation
- R(b);
- Try
- S(D);CHECK
- Vars
- K(e);S_FLIGHT,XR(B)::QAB(F),XP(h)
- Refutation
- K(e);P_SPINP(c),S_FLIGHT
- Try
- B(C);
- Vars
- K(e);S_FLIGHT,XR(B)::QAB(F),XP(h)
- S(d);N_GUARD,SBLOCK,XR(B)::QAB(F)
- R(a);N_GUARD::R1(B)
- R(a);N_GUARD,P_PINP(G)::R1(B)
- R(b);N_GUARD::R1(B),XP(c)
- S(d);N_GUARD::QAB1(F)
- S(d);N_GUARD::QAB1(F),XS(d)
- P(h);N_GUARD::QAB1(F)
- Refutation
- R(a);XR(B)
- Try
- B(I);
- Vars
- R(a);SBLOCK,XR(B)::R(J)
- R(a);N_GUARD::R1(B)
- R(a);N_GUARD,P_PINP(G)::R1(B)
- R(b);N_GUARD::R1(B),XP(c)
- S(d);N_GUARD::QAB1(F)
- S(d);N_GUARD::QAB1(F),XS(d)
- P(h);N_GUARD::QAB1(F)
- Refutation
- K(e);S_FLIGHT,XR(B)
- Try
- R(J);
- Vars
- K(e);S_FLIGHT,XR(B)::QAB(F),XP(h)
- R(a);N_GUARD::R1(B)
- R(a);N_GUARD,P_PINP(G)::R1(B)
- R(b);N_GUARD::R1(B),XP(c)
- S(d);N_GUARD::QAB1(F)
- S(d);N_GUARD::QAB1(F),XS(d)
- P(h);N_GUARD::QAB1(F)
- Refutation
- P(g);XR(J)
- Try
- R(J);
- Vars
- K(e);S_FLIGHT,XR(B)::QAB(F),XP(h)
- R(a);SBLOCK,XR(B)::R(J)
- R(a);N_GUARD::R1(B)
- R(a);N_GUARD,P_PINP(G)::R1(B)
- R(b);N_GUARD::R1(B),XP(c)
- S(d);N_GUARD::QAB1(F)
- S(d);N_GUARD::QAB1(F),XS(d)
- P(h);N_GUARD::QAB1(F)
- Refutation
- S(d);XR(B)
- Try
- R(J);
- Vars
- R(a);SBLOCK,XR(B)::R(J)
- S(d);N_GUARD,SBLOCK,XR(B)::QAB(F)
- R(a);N_GUARD::R1(B)
- R(a);N_GUARD,P_PINP(G)::R1(B)
- R(b);N_GUARD::R1(B),XP(c)
- S(d);N_GUARD::QAB1(F)
- S(d);N_GUARD::QAB1(F),XS(d)
- P(h);N_GUARD::QAB1(F)
- Refutation
- K(e);S_FLIGHT,XR(B)
- Try
- R(J);
- Threat
- QAB(F),XP(h)
- Vars
- R(b);N_GUARD::R1(B),XP(c)
- Refutation
- K(e);S_FLIGHT,XR(B)
- Try
- R(J);
- Vars
- R(a);SBLOCK,XR(B)::R(J)
- S(d);N_GUARD,SBLOCK,XR(B)::QAB(F)
- R(a);N_GUARD::R1(B)
- R(a);N_GUARD,P_PINP(G)::R1(B)
- R(b);N_GUARD::R1(B),XP(c)
- S(d);N_GUARD::QAB1(F)
- S(d);N_GUARD::QAB1(F),XS(d)
- P(h);N_GUARD::QAB1(F)
- Refutation
- K(e);S_FLIGHT,XR(B)
- Try
- Q(F);CHECK
- Vars
- K(e);S_FLIGHT,XR(B)::QAB(F),XP(h)
- Refutation
- K(e);P_SPINP(c),S_FLIGHT
- Try
- Q(F);CHECK
- Vars
- K(e);S_FLIGHT,XR(B)::QAB(F),XP(h)
- Refutation
- K(e);P_SPINP(c),S_FLIGHT
- Try
- P(A);XS(d)
- Threat
- QAB1(F)
- Vars
- K(e);S_FLIGHT,XR(B)::QAR2(F)
- Refutation
- R(a);XR(B)
- Try
- Actual
- B(I);
- Vars
- K(e);S_FLIGHT,XR(B)::QAB(F),XP(h)
- R(a);SBLOCK,XR(B)::R(J)
- S(d);N_GUARD,SBLOCK,XR(B)::B(I)
- R(a);N_GUARD::R1(B)
- R(a);N_GUARD,P_PINP(G)::R1(B)
- R(b);N_GUARD::R1(B),XP(c)
- S(d);N_GUARD::QAB1(F)
- S(d);N_GUARD::QAB1(F),XS(d)
- P(h);N_GUARD::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).