MESON Chess Problem Database
Problem Display
PID: 273346 (4R3/N2p4/1P1kn3/K2p4/3R4/1Bn1Q3/8/8 w - - 0 1)
Froberg, Johan Hilding Laurentius
Lindberger, Orjan
Springaren, 1990
#2
7 + 5
SOLUTION
- SOUND
- Sets
- 1...Kc5
- 2.Rxd5#
- 1...Sb1
- 2.Rxd5#
- 1...Sd1
- 2.Rxd5#
- 1...Sa2
- 2.Rxd5#
- 1...Se2
- 2.Rxd5#
- 1...Sa4
- 2.Rxd5#
- 1...Se4
- 2.Rxd5#
- 1...Sb5
- 2.Rxd5#
- 1...Sxd4
- 2.Qe7#
- 1...Sf4
- 2.Qe7#
- 1...Sc5
- 2.Qf4#
- 2.Qg3#
- 2.Qe5#
- 2.Qe7#
- 1...Sg5
- 2.Qe7#
- 1...Sc7
- 2.Qe7#
- 1...Sg7
- 2.Qe7#
- 1...Sd8
- 2.Qe7#
- 1...Sf8
- 2.Qe7#
- 1...Kc5
- Tries
- 1.Kb4?
- 1...Sxd4
- 2.Qf4#
- 2.Qg3#
- 2.Qe5#
- 2.Qe7#
- 1...Se4
- 2.Rxd5#
- 1...Sb1
- 2.Rxd5#
- 1...Sd1
- 2.Rxd5#
- 1...Se2
- 2.Rxd5#
- 1...Sa4
- 2.Rxd5#
- 1...Sb5
- 2.Rxd5#
- 1...Sf4
- 2.Qxf4#
- 2.Qe5#
- 2.Qe7#
- 1...Sc5
- 2.Qf4#
- 2.Qg3#
- 2.Qe5#
- 2.Qe7#
- 1...Sg5
- 2.Qf4#
- 2.Qg3#
- 2.Qe5#
- 2.Qe7#
- 1...Sc7
- 2.Qf4#
- 2.Qg3#
- 2.Qe5#
- 2.Qe7#
- 1...Sg7
- 2.Qf4#
- 2.Qg3#
- 2.Qe5#
- 2.Qe7#
- 1...Sd8
- 2.Qf4#
- 2.Qg3#
- 2.Qe5#
- 2.Qe7#
- 1...Sf8
- 2.Qf4#
- 2.Qg3#
- 2.Qe5#
- 2.Qe7#
- 1...Sa2+!
- 1...Sxd4
- 1.Sc8+?
- 1...Kc5
- 2.Rc4#
- 2.Qxc3#
- 1...Kc6!
- 1...Kc5
- 1.Ba2?
- 1...Kc5
- 2.Rxd5#
- 1...Sxd4
- 2.Qe7#
- 1...Se4
- 2.Rxd5#
- 1...Sb1
- 2.Rxd5#
- 1...Sd1
- 2.Rxd5#
- 1...Se2
- 2.Rxd5#
- 1...Sa4
- 2.Rxd5#
- 1...Sb5
- 2.Rxd5#
- 1...Sf4
- 2.Qe7#
- 1...Sc5
- 2.Qf4#
- 2.Qg3#
- 2.Qe5#
- 2.Qe7#
- 1...Sg5
- 2.Qe7#
- 1...Sc7
- 2.Qe7#
- 1...Sg7
- 2.Qe7#
- 1...Sd8
- 2.Qe7#
- 1...Sf8
- 2.Qe7#
- 1...Sxa2!
- 1...Kc5
- 1.Bc4?
- 1...Sxd4
- 2.Qe7#
- 1...Se4
- 2.Rxd5#
- 1...Sb1
- 2.Rxd5#
- 1...Sd1
- 2.Rxd5#
- 1...Sa2
- 2.Rxd5#
- 1...Se2
- 2.Rxd5#
- 1...Sa4
- 2.Rxd5#
- 1...Sb5
- 2.Rxd5#
- 1...Sf4
- 2.Qe7#
- 1...Sc5
- 2.Qf4#
- 2.Qg3#
- 2.Qe5#
- 2.Qe7#
- 1...Sg5
- 2.Qe7#
- 1...Sc7
- 2.Qe7#
- 1...Sg7
- 2.Qe7#
- 1...Sd8
- 2.Qe7#
- 1...Sf8
- 2.Qe7#
- 1...Kc5!
- 1...Sxd4
- 1.Rd2?
- 1...Se4
- 2.Rxd5#
- 1...Sd4
- 2.Qe7#
- 1...Sb1
- 2.Rxd5#
- 1...Sd1
- 2.Rxd5#
- 1...Sa2
- 2.Rxd5#
- 1...Se2
- 2.Rxd5#
- 1...Sa4
- 2.Rxd5#
- 1...Sb5
- 2.Rxd5#
- 1...Sf4
- 2.Qe7#
- 1...Sc5
- 2.Qf4#
- 2.Qg3#
- 2.Qe5#
- 2.Qe7#
- 1...Sg5
- 2.Qe7#
- 1...Sc7
- 2.Qe7#
- 1...Sg7
- 2.Qe7#
- 1...Sd8
- 2.Qe7#
- 1...Sf8
- 2.Qe7#
- 1...d4!
- 1...Se4
- 1.Rd3?
- 1...Se4
- 2.Rxd5#
- 1...Sd4
- 2.Qe7#
- 1...Sb1
- 2.Rxd5#
- 1...Sd1
- 2.Rxd5#
- 1...Sa2
- 2.Rxd5#
- 1...Se2
- 2.Rxd5#
- 1...Sa4
- 2.Rxd5#
- 1...Sb5
- 2.Rxd5#
- 1...Sf4
- 2.Qe7#
- 1...Sc5
- 2.Qf4#
- 2.Qg3#
- 2.Qe5#
- 2.Qe7#
- 1...Sg5
- 2.Qe7#
- 1...Sc7
- 2.Qe7#
- 1...Sg7
- 2.Qe7#
- 1...Sd8
- 2.Qe7#
- 1...Sf8
- 2.Qe7#
- 1...d4!
- 1...Se4
- 1.Rxe6+?
- 1...Kc5
- 2.Rc4#
- 2.Rxd5#
- 2.Qxc3#
- 1...dxe6!
- 1...Kc5
- 1.Qf2?
- 1...Kc5
- 2.Rxd5#
- 1...Ke5
- 2.Qf4#
- 1...Sxd4
- 2.Qf8#
- 1...Sb1
- 2.Rxd5#
- 1...Sd1
- 2.Rxd5#
- 1...Sa2
- 2.Rxd5#
- 1...Se2
- 2.Rxd5#
- 1...Sa4
- 2.Rxd5#
- 1...Se4
- 2.Rxd5#
- 1...Sb5
- 2.Rxd5#
- 1...Sc5
- 2.Qg3#
- 2.Qh2#
- 2.Qf4#
- 2.Qf8#
- 1...Sg5
- 2.Qf8#
- 1...Sc7
- 2.Qf8#
- 1...Sg7
- 2.Qf8#
- 1...Sd8
- 2.Qf8#
- 1...Sf8
- 2.Qxf8#
- 1...Sf4!
- 1...Kc5
- 1.Qh6?
- 1...Ke5
- 2.Qf4#
- 1...Sb1
- 2.Rxd5#
- 1...Sd1
- 2.Rxd5#
- 1...Sa2
- 2.Rxd5#
- 1...Se2
- 2.Rxd5#
- 1...Sa4
- 2.Rxd5#
- 1...Se4
- 2.Rxd5#
- 1...Sb5
- 2.Rxd5#
- 1...Kc5!
- 1...Ke5
- 1.Qe1?
- 1...Sxd4
- 2.Qe7#
- 1...Se2
- 2.Rxd5#
- 1...Se4
- 2.Rxd5#
- 1...Sb1
- 2.Rxd5#
- 1...Sd1
- 2.Rxd5#
- 1...Sa2
- 2.Rxd5#
- 1...Sa4
- 2.Rxd5#
- 1...Sb5
- 2.Rxd5#
- 1...Sf4
- 2.Qe7#
- 1...Sc5
- 2.Qg3#
- 2.Qe5#
- 2.Qe7#
- 1...Sg5
- 2.Qe7#
- 1...Sc7
- 2.Qe7#
- 1...Sg7
- 2.Qe7#
- 1...Sd8
- 2.Qe7#
- 1...Sf8
- 2.Qe7#
- 1...Kc5!
- 1...Sxd4
- 1.Qe2?
- 1...Sxe2
- 2.Rxd5#
- 1...Sxd4
- 2.Qe7#
- 1...Se4
- 2.Rxd5#
- 1...Sb1
- 2.Rxd5#
- 1...Sd1
- 2.Rxd5#
- 1...Sa2
- 2.Rxd5#
- 1...Sa4
- 2.Rxd5#
- 1...Sb5
- 2.Rxd5#
- 1...Sf4
- 2.Qe7#
- 1...Sc5
- 2.Qh2#
- 2.Qe5#
- 2.Qe7#
- 1...Sg5
- 2.Qe7#
- 1...Sc7
- 2.Qe7#
- 1...Sg7
- 2.Qe7#
- 1...Sd8
- 2.Qe7#
- 1...Sf8
- 2.Qe7#
- 1...Kc5!
- 1...Sxe2
- 1.Qxc3?
- threat
- 2.Rxd5#
- 1...Sxd4
- 2.Sc8#
- 2.Qb4#
- 2.Qc7#
- 1...Sf4
- 2.Sb5#
- 2.Sc8#
- 2.Qb4#
- 2.Qc7#
- 1...Sc7
- 2.Sc8#
- 2.Qb4#
- 2.Qxc7#
- 1...Ke5!
- threat
- 1.Qe4?
- 1...Sxe4
- 2.Rxd5#
- 1...Sxd4
- 2.Qe7#
- 1...Sf4
- 2.Qe7#
- 1...Sb1
- 2.Rxd5#
- 2.Qxd5#
- 1...Sd1
- 2.Rxd5#
- 2.Qxd5#
- 1...Sa2
- 2.Rxd5#
- 2.Qxd5#
- 1...Se2
- 2.Rxd5#
- 2.Qxd5#
- 1...Sa4
- 2.Rxd5#
- 2.Qxd5#
- 1...Sb5
- 2.Rxd5#
- 2.Qxd5#
- 1...Sc5
- 2.Qf4#
- 2.Qe5#
- 2.Qe7#
- 1...Sg5
- 2.Qe7#
- 1...Sc7
- 2.Qe7#
- 1...Sg7
- 2.Qe7#
- 1...Sd8
- 2.Qe7#
- 1...Sf8
- 2.Qe7#
- 1...Kc5!
- 1...Sxe4
- 1.Qe5+?
- 1...Kc5
- 2.Rc4#
- 1...Kxe5!
- 1...Kc5
- 1.Kb4?
- Keys
- 1.Qc1!
- 1...Kc5
- 2.Rxd5#
- 1...Ke5
- 2.Qf4#
- 1...Sxd4
- 2.Qa3#
- 1...Sb1
- 2.Rxd5#
- 1...Sd1
- 2.Rxd5#
- 1...Sa2
- 2.Rxd5#
- 1...Se2
- 2.Rxd5#
- 1...Sa4
- 2.Rxd5#
- 1...Se4
- 2.Rxd5#
- 1...Sb5
- 2.Rxd5#
- 1...Sf4
- 2.Qa3#
- 1...Sc5
- 2.Qf4#
- 1...Sg5
- 2.Qa3#
- 1...Sc7
- 2.Qa3#
- 1...Sg7
- 2.Qa3#
- 1...Sd8
- 2.Qa3#
- 1...Sf8
- 2.Qa3#
- 1...Kc5
- 1.Qc1!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 7
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- K(c);N_SPINP(b),S_FLIGHT::QAB(B)+R(C),DCHECK,XP(b)
- S(a);N_GUARD::R1(C),XP(b)
- S(d);N_SPINP(b),OGATE,XR(C)::QAB1(B)
- S(d);OGATE::QAB1(B)
- Tries
- Try
- K(D);S_FLIGHT
- Vars
- S(a);N_GUARD::R1(C),XP(b)
- Refutation
- S(a);CHECK
- Try
- S(F);CHECK
- Refutation
- K(c);N_SPINP(b),P-FLIGHT
- Try
- B(A);
- Vars
- K(c);N_SPINP(b),S_FLIGHT::QAB(B)+R(C),DCHECK,XP(b)
- S(d);N_SPINP(b),OGATE,XR(C)::QAB1(B)
- S(a);N_GUARD::R1(C),XP(b)
- S(d);OGATE::QAB1(B)
- Refutation
- S(a);XB(A)
- Try
- B(A);
- Vars
- S(d);N_SPINP(b),OGATE,XR(C)::QAB1(B)
- S(a);N_GUARD::R1(C),XP(b)
- S(d);OGATE::QAB1(B)
- Refutation
- K(c);N_SPINP(b),S_FLIGHT
- Try
- R(C);
- Vars
- S(a);N_GUARD::R1(C),XP(b)
- S(d);N_SPINP(b),OGATE::QAB1(B)
- S(d);OGATE::QAB1(B)
- Refutation
- P(b);
- Try
- R(C);
- Vars
- S(a);N_GUARD::R1(C),XP(b)
- S(d);N_SPINP(b),OGATE::QAB1(B)
- S(d);OGATE::QAB1(B)
- Refutation
- P(b);
- Try
- R(G);CHECK,XS(d)
- Refutation
- P(e);XR(G)
- Try
- Q(B);
- Vars
- K(c);N_SPINP(b),S_FLIGHT::QAB(B)+R(C),DCHECK,XP(b)
- K(c);N_GUARD,N_SPINP(b),P_SPINS(d),S_FLIGHT::QAB1(B)
- S(d);N_GUARD,N_SPINP(b),XR(C)::QAB(B)
- S(a);N_GUARD::R1(C),XP(b)
- S(d);N_GUARD::QAB(B)
- S(d);N_GUARD::QAB(B),XS(d)
- Refutation
- S(d);
- Try
- Q(B);P_PINS(d)
- Vars
- K(c);N_GUARD,N_SPINP(b),S_FLIGHT::QAB1(B)
- S(a);N_GUARD::R1(C),XP(b)
- Refutation
- K(c);N_SPINP(b),N_SPINS(d),S_FLIGHT
- Try
- Q(B);
- Vars
- S(d);N_SPINP(b),OGATE,XR(C)::QAB1(B)
- S(a);N_GUARD::R1(C),XP(b)
- S(d);OGATE::QAB1(B)
- Refutation
- K(c);N_SPINP(b),S_FLIGHT
- Try
- Q(B);
- Vars
- S(a);N_GUARD,XQ(B)::R1(C),XP(b)
- S(d);N_SPINP(b),OGATE,XR(C)::QAB1(B)
- S(a);N_GUARD::R1(C),XP(b)
- S(d);OGATE::QAB1(B)
- Refutation
- K(c);N_SPINP(b),S_FLIGHT
- Try
- Q(B);XS(a)
- Threat
- R1(C),XP(b)
- Refutation
- K(c);N_SPINP(b),P_SPINS(d),S_FLIGHT
- Try
- Q(B);
- Vars
- S(a);N_GUARD,XQ(B)::R1(C),XP(b)
- S(d);N_SPINP(b),OGATE,XR(C)::QAB1(B)
- S(d);OGATE::QAB1(B)
- Refutation
- K(c);N_SPINP(b),S_FLIGHT
- Try
- Q(B);CHECK
- Vars
- K(c);N_GUARD,S_FLIGHT::R1(C)
- Refutation
- K(c);N_SPINP(b),P_SPINS(d),S_FLIGHT,XQ(B)
- Try
- Actual
- Q(B);
- Vars
- K(c);N_SPINP(b),P_SPINS(a),S_FLIGHT::R1(C),XP(b)
- K(c);N_GUARD,N_SPINP(b),P_SPINS(d),S_FLIGHT::QAB1(B)
- S(d);N_GUARD,N_SPINP(b),XR(C)::QAB(B)
- S(a);N_GUARD::R1(C),XP(b)
- S(d);N_GUARD::QAB(B)
- S(d);N_GUARD,SBLOCK::QAB(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).