MESON Chess Problem Database
Problem Display
PID: 3123 (8/1n1R4/1K1b2p1/4pbB1/1p1k4/1BNp4/3R4/Q1N3n1 w - - 0 1)
Thomson, Robert Gavin
Source?, 1918
#2
8 + 9
| 2681 | All Change Here! | 1919 |
SOLUTION
- SOUND
- Sets
- 1...Bh3
- 2.Rxd3#
- 1...Be4
- 2.Sb1#
- 2.Sd1#
- 2.S3a2#
- 2.S3e2#
- 2.Sa4#
- 2.Sb5#
- 2.Sd5#
- 1...Bg4
- 2.Rxd3#
- 1...Be6
- 2.Rxd3#
- 1...Bxd7
- 2.Rxd3#
- 1...Se2
- 2.S1xe2#
- 1...Sf3
- 2.S1e2#
- 1...Sh3
- 2.S1e2#
- 1...Sa5
- 2.Rxd6#
- 1...Sc5
- 2.Rxd6#
- 1...Sd8
- 2.Rxd6#
- 1...bxc3
- 2.Qa4#
- 1...e4
- 2.Sb1#
- 2.Sd1#
- 2.S3a2#
- 2.S3e2#
- 2.Sa4#
- 2.Sb5#
- 2.Sd5#
- 1...Bh3
- Tries
- 1.Kb5?
- 1...bxc3
- 2.Qa4#
- 1...e4
- 2.Sb1#
- 2.Sd1#
- 2.S3a2#
- 2.S3e2#
- 2.Sa4#
- 2.Sd5#
- 1...Bh3
- 2.Rxd3#
- 1...Be4
- 2.Sb1#
- 2.Sd1#
- 2.S3a2#
- 2.S3e2#
- 2.Sa4#
- 2.Sd5#
- 1...Bg4
- 2.Rxd3#
- 1...Be6
- 2.Rxd3#
- 1...Se2
- 2.S1xe2#
- 1...Sf3
- 2.S1e2#
- 1...Sh3
- 2.S1e2#
- 1...Sa5
- 2.Rxd6#
- 1...Sc5
- 2.Rxd6#
- 1...Sd8
- 2.Rxd6#
- 1...Bxd7+!
- 1...bxc3
- 1.Be6?
- threat
- 2.Sb3#
- 1...bxc3
- 2.Qa4#
- 1...e4
- 2.Sb1#
- 2.Sd1#
- 2.S3a2#
- 2.S3e2#
- 2.Sa4#
- 2.Sb5#
- 1...Sa5
- 2.Rxd6#
- 1...Sc5
- 2.Rxd6#
- 1...b3
- 2.Sxb3#
- 1...Bxe6!
- threat
- 1.Bf7?
- threat
- 2.Sb3#
- 1...bxc3
- 2.Qa4#
- 1...e4
- 2.Sb1#
- 2.Sd1#
- 2.S3a2#
- 2.S3e2#
- 2.Sa4#
- 2.Sb5#
- 1...Sa5
- 2.Rxd6#
- 1...Sc5
- 2.Rxd6#
- 1...b3
- 2.Sxb3#
- 1...Be6!
- threat
- 1.Bg8?
- threat
- 2.Sb3#
- 1...bxc3
- 2.Qa4#
- 1...e4
- 2.Sb1#
- 2.Sd1#
- 2.S3a2#
- 2.S3e2#
- 2.Sa4#
- 2.Sb5#
- 1...Sa5
- 2.Rxd6#
- 1...Sc5
- 2.Rxd6#
- 1...b3
- 2.Sxb3#
- 1...Be6!
- threat
- 1.Bh6?
- 1...Bxd7
- 2.Rxd3#
- 1...bxc3
- 2.Qa4#
- 1...e4
- 2.Sb1#
- 2.Sd1#
- 2.S3a2#
- 2.S3e2#
- 2.Sa4#
- 2.Sb5#
- 2.Sd5#
- 1...Se2
- 2.S1xe2#
- 1...Bh3
- 2.Rxd3#
- 1...Be4
- 2.Sb1#
- 2.Sd1#
- 2.S3a2#
- 2.S3e2#
- 2.Sa4#
- 2.Sb5#
- 2.Sd5#
- 1...Bg4
- 2.Rxd3#
- 1...Be6
- 2.Rxd3#
- 1...Sf3
- 2.S1e2#
- 1...Sh3
- 2.S1e2#
- 1...Sa5
- 2.Rxd6#
- 1...Sc5
- 2.Rxd6#
- 1...Sd8
- 2.Rxd6#
- 1...g5!
- 1...Bxd7
- 1.Rd1?
- 1...Bxd7
- 2.Rxd3#
- 1...bxc3
- 2.Qa4#
- 1...e4
- 2.Sb1#
- 2.S3a2#
- 2.S3e2#
- 2.Sa4#
- 2.Sb5#
- 2.Sd5#
- 1...Se2
- 2.S1xe2#
- 1...Bh3
- 2.Rxd3#
- 1...Be4
- 2.Sb1#
- 2.S3a2#
- 2.S3e2#
- 2.Sa4#
- 2.Sb5#
- 2.Sd5#
- 1...Bg4
- 2.Rxd3#
- 1...Be6
- 2.Rxd3#
- 1...Sf3
- 2.S1e2#
- 1...Sh3
- 2.S1e2#
- 1...Sa5
- 2.Rxd6#
- 1...Sc5
- 2.Rxd6#
- 1...Sd8
- 2.Rxd6#
- 1...d2!
- 1...Bxd7
- 1.Rd8?
- 1...bxc3
- 2.Qa4#
- 1...e4
- 2.Sb1#
- 2.Sd1#
- 2.S3a2#
- 2.S3e2#
- 2.Sa4#
- 2.Sb5#
- 2.Sd5#
- 1...Se2
- 2.S1xe2#
- 1...Bh3
- 2.Rxd3#
- 1...Be4
- 2.Sb1#
- 2.Sd1#
- 2.S3a2#
- 2.S3e2#
- 2.Sa4#
- 2.Sb5#
- 2.Sd5#
- 1...Bg4
- 2.Rxd3#
- 1...Be6
- 2.Rxd3#
- 1...Bd7
- 2.Rxd3#
- 1...Bc8
- 2.Rxd3#
- 1...Sf3
- 2.S1e2#
- 1...Sh3
- 2.S1e2#
- 1...Sa5
- 2.Rxd6#
- 1...Sc5
- 2.Rxd6#
- 1...Sxd8!
- 1...bxc3
- 1.Qb2?
- 1...Bxd7
- 2.Rxd3#
- 1...e4
- 2.Sb1#
- 2.Sd1#
- 2.S3a2#
- 2.S3e2#
- 2.Sa4#
- 2.Sb5#
- 2.Sd5#
- 1...Se2
- 2.S1xe2#
- 1...Bh3
- 2.Rxd3#
- 1...Be4
- 2.Sb1#
- 2.Sd1#
- 2.S3a2#
- 2.S3e2#
- 2.Sa4#
- 2.Sb5#
- 2.Sd5#
- 1...Bg4
- 2.Rxd3#
- 1...Be6
- 2.Rxd3#
- 1...Sf3
- 2.S1e2#
- 1...Sh3
- 2.S1e2#
- 1...Sa5
- 2.Rxd6#
- 1...Sc5
- 2.Rxd6#
- 1...Sd8
- 2.Rxd6#
- 1...bxc3!
- 1...Bxd7
- 1.Kb5?
- Keys
- 1.Qa8!
- 1...Kxc3
- 2.Qa1#
- 1...Bxd7
- 2.Rxd3#
- 1...bxc3
- 2.Qa4#
- 1...e4
- 2.Qh8#
- 1...Se2
- 2.S1xe2#
- 1...Bh3
- 2.Rxd3#
- 1...Be4
- 2.Sb5#
- 1...Bg4
- 2.Rxd3#
- 1...Be6
- 2.Rxd3#
- 1...Sf3
- 2.S1e2#
- 1...Sh3
- 2.S1e2#
- 1...Sa5
- 2.Sb5#
- 1...Sc5
- 2.Sb5#
- 1...Sd8
- 2.Sb5#
- 1...Kxc3
- 1.Qa8!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 3
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- B(f);N_GUARD::R1(C),XP(b)
- B(f);N_GUARD,N_SPINB(g),XR(H)::R1(C),XP(b)
- S(a);N_GUARD::S(B),XS(a)
- S(a);N_GUARD::S(B)
- S(i);N_GUARD::R(H),XB(g)
- P(c);N_SPINP(b),OGATEB,P_SPINP(c),SBLOCK,XS(E)::QAR(A)
- Tries
- Try
- K(G);P-FLIGHT
- Vars
- P(c);N_SPINP(b),OGATEB,P_SPINP(c),SBLOCK,XS(E)::QAR(A)
- B(f);N_GUARD::R1(C),XP(b)
- S(a);N_GUARD::S(B),XS(a)
- S(a);N_GUARD::S(B)
- S(i);N_GUARD::R(H),XB(g)
- Refutation
- B(f);CHECK,N_SPINB(g),XR(H)
- Try
- B(D);
- Threat
- S(B)
- Vars
- P(c);N_SPINP(b),OGATEB,P_SPINP(c),SBLOCK,XS(E)::QAR(A)
- S(i);N_GUARD::R(H),XB(g)
- P(c);::S(B),XP(c)
- Refutation
- B(f);XB(D)
- Try
- B(D);
- Threat
- S(B)
- Vars
- P(c);N_SPINP(b),OGATEB,P_SPINP(c),SBLOCK,XS(E)::QAR(A)
- S(i);N_GUARD::R(H),XB(g)
- P(c);::S(B),XP(c)
- Refutation
- B(f);
- Try
- B(D);
- Threat
- S(B)
- Vars
- P(c);N_SPINP(b),OGATEB,P_SPINP(c),SBLOCK,XS(E)::QAR(A)
- S(i);N_GUARD::R(H),XB(g)
- P(c);::S(B),XP(c)
- Refutation
- B(f);
- Try
- B(F);
- Vars
- B(f);N_GUARD,N_SPINB(g),XR(H)::R1(C),XP(b)
- P(c);N_SPINP(b),OGATEB,P_SPINP(c),SBLOCK,XS(E)::QAR(A)
- S(a);N_GUARD::S(B),XS(a)
- B(f);N_GUARD::R1(C),XP(b)
- S(a);N_GUARD::S(B)
- S(i);N_GUARD::R(H),XB(g)
- Refutation
- P(h);
- Try
- R(C);
- Vars
- B(f);N_GUARD,N_SPINB(g),XR(H)::R1(C),XP(b)
- P(c);N_SPINP(b),OGATEB,P_SPINP(c),SBLOCK,XS(E)::QAR(A)
- S(a);N_GUARD::S(B),XS(a)
- B(f);N_GUARD::R1(C),XP(b)
- S(a);N_GUARD::S(B)
- S(i);N_GUARD::R(H),XB(g)
- Refutation
- P(b);
- Try
- R(H);
- Vars
- P(c);N_SPINP(b),OGATEB,P_SPINP(c),SBLOCK,XS(E)::QAR(A)
- S(a);N_GUARD::S(B),XS(a)
- B(f);N_GUARD::R1(C),XP(b)
- B(f);N_GUARD,N_SPINB(g)::R1(C),XP(b)
- S(a);N_GUARD::S(B)
- S(i);N_GUARD::R(H),XB(g)
- Refutation
- S(i);N_SPINB(g),XR(H)
- Try
- Q(A);
- Vars
- B(f);N_GUARD,N_SPINB(g),XR(H)::R1(C),XP(b)
- S(a);N_GUARD::S(B),XS(a)
- B(f);N_GUARD::R1(C),XP(b)
- S(a);N_GUARD::S(B)
- S(i);N_GUARD::R(H),XB(g)
- Refutation
- P(c);N_SPINP(b),P_SPINP(c),XS(E)
- Try
- Actual
- Q(A);
- Vars
- K(d);N_SPINB(g),N_SPINP(b),OGATEB,S_FLIGHT,XS(E)::QAB(A)
- B(f);N_GUARD,N_SPINB(g),XR(H)::R1(C),XP(b)
- P(c);OGATEB,SBLOCK,XS(E)::QAR(A)
- P(e);OGATEB::QAB(A)
- S(a);N_GUARD::S(B),XS(a)
- B(f);N_GUARD::R1(C),XP(b)
- B(f);SBLOCK::S(E)
- S(a);N_GUARD::S(B)
- S(i);::S(E)
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