MESON Chess Problem Database
Problem Display
PID: 208689 (8/8/4NK2/3p1N2/4k3/3n1p2/2Q5/8 w - - 0 1)
Chernikh, Vassily
Zadachi i Etyudi, 2019
#2
4 + 4
SOLUTION
- SOUND
- Sets
- 1...f2
- 2.Qe2#
- 1...d4
- 2.Qc6#
- 1...f2
- Tries
- 1.Sfd4?
- 1...f2
- 2.Qe2#
- 1...Ke3!
- 1...f2
- 1.Qd1?
- 1...Sc1
- 2.Qd4#
- 1...Se1
- 2.Qd4#
- 1...Sb2
- 2.Qd4#
- 1...Sf2
- 2.Qd4#
- 1...Sb4
- 2.Qd4#
- 1...Sf4
- 2.Sc5#
- 2.Sg5#
- 2.Qd4#
- 1...Sc5
- 2.Qd4#
- 1...Se5
- 2.Qd4#
- 1...f2
- 2.Qe2#
- 2.Qh1#
- 1...d4!
- 1...Sc1
- 1.Qb3?
- 1...Sc1
- 2.Sg3#
- 2.Sd6#
- 2.Qe3#
- 1...Se1
- 2.Sg3#
- 2.Sd6#
- 2.Qe3#
- 1...Sb2
- 2.Sg3#
- 2.Sd6#
- 2.Qe3#
- 1...Sf2
- 2.Sg3#
- 2.Sd6#
- 2.Qe3#
- 1...Sb4
- 2.Sg3#
- 2.Sd6#
- 2.Qe3#
- 1...Sf4
- 2.Sg3#
- 2.Sd6#
- 2.Sc5#
- 2.Sg5#
- 2.Qe3#
- 1...Sc5
- 2.Sg3#
- 2.Sd6#
- 2.Qe3#
- 1...Se5
- 2.Sg3#
- 2.Sd6#
- 2.Qe3#
- 1...d4
- 2.Qb7#
- 1...f2!
- 1...Sc1
- 1.Qa4+?
- 1...d4
- 2.Qc6#
- 2.Qxd4#
- 2.Qa8#
- 1...Sb4!
- 1...d4
- 1.Qc1?
- threat
- 2.Sg3#
- 2.Sd6#
- 2.Sg5#
- 2.Qe3#
- 1...Se1
- 2.Sc5#
- 2.Qe3#
- 1...Sb2
- 2.Sc5#
- 2.Qe3#
- 1...Sf2
- 2.Sc5#
- 2.Qe3#
- 1...Sb4
- 2.Sc5#
- 2.Qe3#
- 1...Sf4
- 2.Sc5#
- 2.Qe3#
- 1...Sc5
- 2.Sxc5#
- 2.Qe3#
- 1...Se5
- 2.Sc5#
- 2.Qe3#
- 1...f2
- 2.Sg5#
- 2.Qe3#
- 2.Qh1#
- 1...d4
- 2.Qc6#
- 1...Sxc1!
- threat
- 1.Qb2?
- threat
- 2.Qd4#
- 1...f2
- 2.Qe2#
- 1...d4
- 2.Qxd4#
- 2.Qb7#
- 1...Sxb2!
- threat
- 1.Qd2?
- threat
- 2.Sg3#
- 2.Sd6#
- 2.Sg5#
- 2.Qe3#
- 1...f2
- 2.Sg5#
- 2.Qe3#
- 2.Qe2#
- 1...d4!
- threat
- 1.Qf2?
- threat
- 2.Sg3#
- 2.Sd6#
- 2.Qe3#
- 2.Qd4#
- 1...Sc1
- 2.Qe3#
- 2.Qd4#
- 1...Se1
- 2.Qe3#
- 2.Qd4#
- 1...Sb2
- 2.Qe3#
- 2.Qd4#
- 1...Sb4
- 2.Qe3#
- 2.Qd4#
- 1...Sf4
- 2.Sc5#
- 2.Qe3#
- 2.Qd4#
- 1...Sc5
- 2.Qe3#
- 2.Qd4#
- 1...Se5
- 2.Qe3#
- 2.Qd4#
- 1...d4
- 2.Qxd4#
- 1...Sxf2!
- threat
- 1.Qh2?
- threat
- 2.Sg5#
- 1...Sc1
- 2.Sc5#
- 1...Se1
- 2.Sc5#
- 1...Sb2
- 2.Sc5#
- 1...Sf2
- 2.Sc5#
- 1...Sb4
- 2.Sc5#
- 1...Sf4
- 2.Sc5#
- 1...Sc5
- 2.Sxc5#
- 1...Se5
- 2.Sc5#
- 1...d4!
- threat
- 1.Qc3?
- threat
- 2.Qd4#
- 1...d4
- 2.Qxd4#
- 2.Qc6#
- 1...f2!
- threat
- 1.Qc4+?
- 1...d4
- 2.Qxd4#
- 2.Qc6#
- 1...dxc4!
- 1...d4
- 1.Qc5?
- threat
- 2.Sg3#
- 2.Sd6#
- 2.Qe3#
- 2.Qd4#
- 1...Sc1
- 2.Qe3#
- 2.Qd4#
- 1...Se1
- 2.Qe3#
- 2.Qd4#
- 1...Sb2
- 2.Qe3#
- 2.Qd4#
- 1...Sf2
- 2.Qe3#
- 2.Qd4#
- 1...Sb4
- 2.Qe3#
- 2.Qd4#
- 1...Sf4
- 2.Qe3#
- 2.Qd4#
- 1...Se5
- 2.Qe3#
- 2.Qd4#
- 1...f2
- 2.Qe3#
- 1...d4
- 2.Qxd4#
- 2.Qc6#
- 1...Sxc5!
- threat
- 1.Qc7?
- threat
- 2.Sg5#
- 1...Sc1
- 2.Sc5#
- 1...Se1
- 2.Sc5#
- 1...Sb2
- 2.Sc5#
- 1...Sf2
- 2.Sc5#
- 1...Sb4
- 2.Sc5#
- 1...Sf4
- 2.Sc5#
- 1...Sc5
- 2.Sxc5#
- 1...d4
- 2.Qc6#
- 2.Qb7#
- 1...Se5!
- threat
- 1.Sfd4?
- Keys
- 1.Qb1!
- 1...f2
- 2.Qh1#
- 1...d4
- 2.Qb7#
- 1...f2
- 1.Qb1!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 2
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- P(b);N_GUARD::QAR2(A)
- P(d);OGATEB::QAB(A)
- Tries
- Try
- S(B);
- Vars
- P(b);N_GUARD::QAR2(A)
- Refutation
- K(c);N_SPINS(a),P-FLIGHT
- Try
- Q(A);N_PINS(a)
- Vars
- S(a);OGATE::QAR1(A)
- Refutation
- P(d);
- Try
- Q(A);N_PINS(a)
- Vars
- P(d);OGATEB::QAB(A)
- Refutation
- P(b);
- Try
- Q(A);CHECK,N_PINS(a)
- Refutation
- S(a);P_SPINS(a)
- Try
- Q(A);N_PINS(a)
- Threat
- DUALS(4)
- Vars
- P(d);OGATEB::QAB(A)
- Refutation
- S(a);XQ(A)
- Try
- Q(A);N_PINS(a)
- Threat
- QAR1(A)
- Vars
- P(b);N_GUARD::QAR2(A)
- Refutation
- S(a);XQ(A)
- Try
- Q(A);N_PINS(a)
- Threat
- DUALS(4)
- Refutation
- P(d);
- Try
- Q(A);N_PINS(a)
- Threat
- DUALS(4)
- Vars
- P(d);::QAR1(A),XP(d)
- Refutation
- S(a);XQ(A)
- Try
- Q(A);N_PINS(a)
- Threat
- S(C)
- Vars
- S(a);N_GUARD::S(C)
- S(a);N_GUARD::S(C),XS(a)
- Refutation
- P(d);
- Try
- Q(A);N_PINS(a)
- Threat
- QAR1(A)
- Refutation
- P(b);
- Try
- Q(A);CHECK,N_PINS(a)
- Refutation
- P(d);XQ(A)
- Try
- Q(A);N_PINS(a)
- Threat
- DUALS(4)
- Vars
- P(b);::QAR1(A)
- Refutation
- S(a);XQ(A)
- Try
- Q(A);N_PINS(a)
- Threat
- S(C)
- Vars
- S(a);N_GUARD::S(C)
- S(a);N_GUARD::S(C),XS(a)
- Refutation
- S(a);
- Try
- Actual
- Q(A);
- Vars
- P(b);OGATEB::QAB(A)
- P(d);OGATEB::QAB(A)
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).