MESON Chess Problem Database
Problem Display
PID: 78300 (2B1R3/1p2Pp1b/5k2/1Q3NRP/r2p1NK1/1p6/1q1r1b2/B7 w - - 0 1)
Cheylan, Yves
Myllyniemi, Matti Arvo
HM., Suomen Shakki, 1977
#2
10 + 10
SOLUTION
- SOUND
- Sets
- 1...Bxf5+
- 2.Qxf5#
- 1...Bxf5+
- Tries
- 1.Se3?
- threat
- 2.Sed5#
- 2.Sfd5#
- 2.Qe5#
- 2.Qb6#
- 1...Bf5+
- 2.Qxf5#
- 1...Bxe3
- 2.Sd5#
- 2.Qe5#
- 2.Qb6#
- 1...Bg6
- 2.Qe5#
- 1...Qc1
- 2.Sed5#
- 2.Sfd5#
- 2.Qe5#
- 1...Qa3
- 2.Sed5#
- 2.Sfd5#
- 2.Qe5#
- 1...Qc3
- 2.Sed5#
- 2.Sfd5#
- 2.Qe5#
- 1...Qc2
- 2.Sed5#
- 2.Sfd5#
- 2.Qe5#
- 1...Rc2
- 2.Sed5#
- 2.Sfd5#
- 2.Qe5#
- 1...Rb4
- 2.Sed5#
- 2.Sfd5#
- 2.Qe5#
- 1...Rc4
- 2.Sed5#
- 2.Sfd5#
- 2.Qe5#
- 1...Ra5
- 2.Sed5#
- 2.Sfd5#
- 2.Qb6#
- 1...Ra6
- 2.Sed5#
- 2.Sfd5#
- 2.Qe5#
- 1...Be4
- 2.Qe5#
- 1...d3
- 2.Sd5#
- 2.Qb6#
- 1...b6
- 2.Sed5#
- 2.Sfd5#
- 2.Qc6#
- 2.Qe5#
- 2.Qxb6#
- 1...dxe3!
- threat
- 1.Sg3?
- threat
- 2.Sd5#
- 2.Qe5#
- 2.Qb6#
- 1...Bf5+
- 2.Qxf5#
- 1...Bg6
- 2.Qe5#
- 1...Qc1
- 2.Sd5#
- 2.Qe5#
- 1...Qa3
- 2.Sd5#
- 2.Qe5#
- 1...Qc3
- 2.Sd5#
- 2.Qe5#
- 1...Qc2
- 2.Sd5#
- 2.Qe5#
- 1...Rc2
- 2.Sd5#
- 2.Qe5#
- 1...Re2
- 2.Sd5#
- 1...Rb4
- 2.Sd5#
- 2.Qe5#
- 1...Rc4
- 2.Sd5#
- 2.Qe5#
- 1...Ra5
- 2.Sd5#
- 2.Qb6#
- 1...Ra6
- 2.Sd5#
- 2.Qe5#
- 1...Be4
- 2.Sxe4#
- 2.Qe5#
- 1...b6
- 2.Sd5#
- 2.Qc6#
- 2.Qe5#
- 2.Qxb6#
- 1...d3!
- threat
- 1.Sh4?
- threat
- 2.Sd5#
- 2.Qe5#
- 2.Qb6#
- 1...Bf5+
- 2.Qxf5#
- 1...Bg6
- 2.Qe5#
- 1...Qc1
- 2.Sd5#
- 2.Qe5#
- 1...Qa3
- 2.Sd5#
- 2.Qe5#
- 1...Qc3
- 2.Sd5#
- 2.Qe5#
- 1...Qc2
- 2.Sd5#
- 2.Qe5#
- 1...Rc2
- 2.Sd5#
- 2.Qe5#
- 1...Re2
- 2.Sd5#
- 1...Rb4
- 2.Sd5#
- 2.Qe5#
- 1...Rc4
- 2.Sd5#
- 2.Qe5#
- 1...Ra5
- 2.Sd5#
- 2.Qb6#
- 1...Ra6
- 2.Sd5#
- 2.Qe5#
- 1...Be4
- 2.Qe5#
- 1...b6
- 2.Sd5#
- 2.Qc6#
- 2.Qe5#
- 2.Qxb6#
- 1...d3!
- threat
- 1.Sd6?
- threat
- 2.Sd5#
- 2.Qe5#
- 1...Bf5+
- 2.Qxf5#
- 1...Bg6
- 2.Qe5#
- 1...Re2
- 2.Sd5#
- 1...Ra5
- 2.Sd5#
- 1...Be4
- 2.Sxe4#
- 2.Qe5#
- 1...d3!
- threat
- 1.Sh6?
- threat
- 2.Sd5#
- 2.Qe5#
- 2.Qb6#
- 1...Bf5+
- 2.Qxf5#
- 1...Bg6
- 2.Qe5#
- 1...Qc1
- 2.Sd5#
- 2.Qe5#
- 1...Qa3
- 2.Sd5#
- 2.Qe5#
- 1...Qc3
- 2.Sd5#
- 2.Qe5#
- 1...Qc2
- 2.Sd5#
- 2.Qe5#
- 1...Rc2
- 2.Sd5#
- 2.Qe5#
- 1...Re2
- 2.Sd5#
- 1...Rb4
- 2.Sd5#
- 2.Qe5#
- 1...Rc4
- 2.Sd5#
- 2.Qe5#
- 1...Ra5
- 2.Sd5#
- 2.Qb6#
- 1...Ra6
- 2.Sd5#
- 2.Qe5#
- 1...Be4
- 2.Sg8#
- 2.Qe5#
- 1...b6
- 2.Sd5#
- 2.Qc6#
- 2.Qe5#
- 2.Qxb6#
- 1...d3!
- threat
- 1.Sg7?
- threat
- 2.Sd5#
- 2.Qe5#
- 2.Qb6#
- 1...Bf5+
- 2.Qxf5#
- 1...Bg6
- 2.Qe5#
- 1...Qc1
- 2.Sd5#
- 2.Qe5#
- 1...Qa3
- 2.Sd5#
- 2.Qe5#
- 1...Qc3
- 2.Sd5#
- 2.Qe5#
- 1...Qc2
- 2.Sd5#
- 2.Qe5#
- 1...Rc2
- 2.Sd5#
- 2.Qe5#
- 1...Re2
- 2.Sd5#
- 1...Rb4
- 2.Sd5#
- 2.Qe5#
- 1...Rc4
- 2.Sd5#
- 2.Qe5#
- 1...Ra5
- 2.Sd5#
- 2.Qb6#
- 1...Ra6
- 2.Sd5#
- 2.Qe5#
- 1...Be4
- 2.Qe5#
- 1...b6
- 2.Sd5#
- 2.Qc6#
- 2.Qe5#
- 2.Qxb6#
- 1...d3!
- threat
- 1.Rg6+?
- 1...fxg6
- 2.Rf8#
- 1...Bxg6!
- 1...fxg6
- 1.Se3?
- Keys
- 1.Sxd4!
- threat
- 2.Sd5#
- 2.Qe5#
- 2.Qb6#
- 1...Bf5+
- 2.Qxf5#
- 1...Qxd4
- 2.Qb6#
- 1...Rdxd4
- 2.Qe5#
- 1...Raxd4
- 2.Qe5#
- 1...Bxd4
- 2.Sd5#
- 1...Bg6
- 2.Qe5#
- 1...Qc1
- 2.Sd5#
- 2.Qe5#
- 1...Qa3
- 2.Sd5#
- 2.Qe5#
- 1...Qc3
- 2.Sd5#
- 2.Qe5#
- 1...Qc2
- 2.Sd5#
- 2.Qe5#
- 1...Rc2
- 2.Sd5#
- 2.Qe5#
- 1...Re2
- 2.Sd5#
- 1...Rb4
- 2.Sd5#
- 2.Qe5#
- 1...Rc4
- 2.Sd5#
- 2.Qe5#
- 1...Ra5
- 2.Sd5#
- 2.Qb6#
- 1...Ra6
- 2.Sd5#
- 2.Qe5#
- 1...Be4
- 2.Qe5#
- 1...b6
- 2.Sd5#
- 2.Qc6#
- 2.Qe5#
- 2.Qxb6#
- threat
- 1.Sxd4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 0
- Sets
- B(j);CHECK,OGATE,XS(E)::QAR1(D),XB(j)
- Tries
- Try
- S(E);
- Threat
- DUALS(4)
- Vars
- B(j);CHECK,N_GUARD::QAR1(D),XB(j)
- B(j);::QAB1(D)
- Refutation
- P(f);P_PINS(B),P_SPINQ(a),XS(E)
- Try
- S(E);
- Threat
- DUALS(3)
- Vars
- B(j);CHECK,N_GUARD::QAR1(D),XB(j)
- B(j);::QAB1(D)
- R(b);::S(B)
- Refutation
- P(f);P_PINS(B),P_SPINQ(a)
- Try
- S(E);
- Threat
- DUALS(3)
- Vars
- B(j);CHECK,N_GUARD::QAR1(D),XB(j)
- B(j);::QAB1(D)
- R(b);::S(B)
- Refutation
- P(f);P_PINS(B),P_SPINQ(a)
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- B(j);CHECK,N_GUARD::QAR1(D),XB(j)
- B(j);::QAB1(D)
- R(b);::S(B)
- R(e);::S(B)
- Refutation
- P(f);P_PINS(B),P_SPINQ(a)
- Try
- S(E);
- Threat
- DUALS(3)
- Vars
- B(j);CHECK,N_GUARD::QAR1(D),XB(j)
- B(j);::QAB1(D)
- R(b);::S(B)
- Refutation
- P(f);P_PINS(B),P_SPINQ(a)
- Try
- S(E);
- Threat
- DUALS(3)
- Vars
- B(j);CHECK,N_GUARD::QAR1(D),XB(j)
- B(j);::QAB1(D)
- R(b);::S(B)
- Refutation
- P(f);P_PINS(B),P_SPINQ(a)
- Try
- R(F);CHECK
- Vars
- P(i);S_CUTB(j),XR(F)::R(J)
- Refutation
- B(j);XR(F)
- Try
- Actual
- S(E);XP(f)
- Threat
- DUALS(3)
- Vars
- B(j);CHECK,N_GUARD::QAR1(D),XB(j)
- Q(a);P_PINS(B),P_SPINQ(a),XS(E)::QAR(D)
- R(b);P_PINS(B),XS(E)::QAB1(D)
- R(e);P_PINS(B),XS(E)::QAB1(D)
- B(c);XS(E)::S(B)
- B(j);::QAB1(D)
- R(b);::S(B)
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).