MESON Chess Problem Database
Problem Display
PID: 237688 (8/4N3/4nB1K/3N4/2Qbk3/1p6/1P2P3/4n3 w - - 0 1)
Lewis, Robert Tony
The Problemist, 1988
#2
7 + 5
SOLUTION
- SOUND
- Sets
- 1...Sc2
- 2.Qd3#
- 1...Sg2
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...Sf3
- 2.Qd3#
- 1...Sf4
- 2.Qxd4#
- 1...Sc5
- 2.Qxd4#
- 1...Sg5
- 2.Qxd4#
- 1...Sc7
- 2.Qxd4#
- 1...Sg7
- 2.Qxd4#
- 1...Sd8
- 2.Qxd4#
- 1...Sf8
- 2.Qxd4#
- 1...Sc2
- Tries
- 1.Bxd4?
- 1...Sc2
- 2.Qd3#
- 1...Sg2
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...Sf3
- 2.Qd3#
- 1...Sf4
- 2.Sc3#
- 2.Sf6#
- 2.Bc3#
- 2.Bf6#
- 2.Bg7#
- 2.Bh8#
- 1...Sc5
- 2.Bc3#
- 2.Bf6#
- 2.Bg7#
- 2.Bh8#
- 1...Sg5
- 2.Bc3#
- 2.Bf6#
- 2.Bg7#
- 2.Bh8#
- 1...Sc7
- 2.Bc3#
- 2.Bf6#
- 2.Bg7#
- 2.Bh8#
- 1...Sg7
- 2.Bc3#
- 2.Bf6#
- 2.Bxg7#
- 1...Sd8
- 2.Bc3#
- 2.Bf6#
- 2.Bg7#
- 2.Bh8#
- 1...Sf8
- 2.Bc3#
- 2.Bf6#
- 2.Bg7#
- 2.Bh8#
- 1...Sxd4!
- 1...Sc2
- 1.Bg7?
- 1...Sc2
- 2.Qd3#
- 1...Sg2
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...Sf3
- 2.Qd3#
- 1...Sf4
- 2.Qxd4#
- 1...Sc5
- 2.Qxd4#
- 1...Sg5
- 2.Qxd4#
- 1...Sc7
- 2.Qxd4#
- 1...Sd8
- 2.Qxd4#
- 1...Sf8
- 2.Qxd4#
- 1...Sxg7!
- 1...Sc2
- 1.Bh8?
- 1...Sc2
- 2.Qd3#
- 1...Sg2
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...Sf3
- 2.Qd3#
- 1...Sf4
- 2.Qxd4#
- 1...Sc5
- 2.Qxd4#
- 1...Sg5
- 2.Qxd4#
- 1...Sc7
- 2.Qxd4#
- 1...Sd8
- 2.Qxd4#
- 1...Sf8
- 2.Qxd4#
- 1...Sg7!
- 1...Sc2
- 1.Qc3?
- 1...Be3+
- 2.Qxe3#
- 1...Bxf6
- 2.Qe3#
- 1...Sc2
- 2.Qd3#
- 2.Qf3#
- 1...Bg1
- 2.Qe5#
- 1...Bf2
- 2.Qe5#
- 1...Bc5
- 2.Qe5#
- 1...Be5
- 2.Qxe5#
- 2.Qe3#
- 1...Bb6
- 2.Qe5#
- 1...Ba7
- 2.Qe5#
- 1...Sg2
- 2.Qd3#
- 2.Qf3#
- 1...Sd3
- 2.Qxd3#
- 1...Sf3
- 2.Qd3#
- 2.Qxf3#
- 2.exf3#
- 1...Sf4
- 2.Qxd4#
- 1...Sc5
- 2.Qxd4#
- 1...Sg5
- 2.Qxd4#
- 1...Sc7
- 2.Qxd4#
- 1...Sg7
- 2.Qxd4#
- 1...Sd8
- 2.Qxd4#
- 1...Sf8
- 2.Qxd4#
- 1...Bxc3!
- 1...Be3+
- 1.Bxd4?
- Keys
- 1.Qc1!
- 1...Be3+
- 2.Qxe3#
- 1...Bxb2
- 2.Qe3#
- 1...Bxf6
- 2.Qe3#
- 1...Be5
- 2.Qe3#
- 1...Sc2
- 2.Qh1#
- 1...Bg1
- 2.Sc3#
- 1...Bf2
- 2.Sc3#
- 1...Bc3
- 2.Sxc3#
- 2.Qe3#
- 1...Bc5
- 2.Sc3#
- 1...Bb6
- 2.Sc3#
- 1...Ba7
- 2.Sc3#
- 1...Sg2
- 2.Qb1#
- 1...Sd3
- 2.Qh1#
- 1...Sf3
- 2.Qb1#
- 1...Sf4
- 2.Qxf4#
- 1...Sc5
- 2.Qf4#
- 1...Sg5
- 2.Qf4#
- 1...Sc7
- 2.Qf4#
- 1...Sg7
- 2.Qf4#
- 1...Sd8
- 2.Qf4#
- 1...Sf8
- 2.Qf4#
- 1...Be3+
- 1.Qc1!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 11
- ADDED MATES = 9
- REMOVED MATES = 0
- Sets
- S(a);N_GUARD::QAB1(C)
- S(a);N_GUARD::QAB1(C),XS(a)
- S(e);N_GUARD::QAR1(C),XB(c)
- Tries
- Try
- B(E);XB(c)
- Vars
- S(a);N_GUARD::QAB1(C)
- S(a);N_GUARD::QAB1(C),XS(a)
- Refutation
- S(e);P_SPINS(e),XB(E)
- Try
- B(E);
- Vars
- S(a);N_GUARD::QAB1(C)
- S(a);N_GUARD::QAB1(C),XS(a)
- S(e);N_GUARD::QAR1(C),XB(c)
- Refutation
- S(e);XB(E)
- Try
- B(E);
- Vars
- S(a);N_GUARD::QAB1(C)
- S(a);N_GUARD::QAB1(C),XS(a)
- S(e);N_GUARD::QAR1(C),XB(c)
- Refutation
- S(e);
- Try
- Q(C);N_PINB(c)
- Vars
- B(c);CHECK,N_GUARD::QAR1(C),XB(c)
- B(c);N_GUARD,XB(E)::QAR1(C)
- B(c);OGATE::QAR1(C)
- S(a);N_GUARD::QAB1(C),XS(a)
- S(e);N_GUARD::QAR1(C),XB(c)
- Refutation
- B(c);XQ(C)
- Try
- Actual
- Q(C);N_PINB(c)
- Vars
- B(c);CHECK,N_GUARD::QAR1(C),XB(c)
- B(c);N_GUARD,XP(A)::QAR1(C)
- B(c);N_GUARD,XB(E)::QAR1(C)
- B(c);N_GUARD::QAR1(C)
- S(a);OGATE::QAB(C)
- B(c);N_GUARD::S(D)
- S(a);N_GUARD::QAB(C)
- S(e);N_GUARD::QAR1(C),XS(e)
- S(e);N_GUARD::QAR1(C)
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