MESON Chess Problem Database
Problem Display
PID: 186029 (1KB5/1Q3p2/5Pp1/3pp1p1/2RPknR1/8/n3PP2/rNb5 w - - 0 1)
Davis, Henry Hosey
Sussex Chess Problem Fraternity, 1918
#2
10 + 10
| 15 | British Chess Magazine | 1918 |
SOLUTION
- SOUND
- Sets
- 1...Rxb1
- 2.Qxb1#
- 1...Bb2
- 2.Sd2#
- 1...Bd2
- 2.Sxd2#
- 1...Ba3
- 2.Sd2#
- 1...Be3
- 2.f3#
- 1...Sc3
- 2.Sxc3#
- 1...Sb4
- 2.Sc3#
- 1...exd4
- 2.Qe7#
- 1...Rxb1
- Tries
- 1.Kc7?
- 1...Rxb1
- 2.Qxb1#
- 1...Bb2
- 2.Sd2#
- 1...Bd2
- 2.Sxd2#
- 1...Ba3
- 2.Sd2#
- 1...Be3
- 2.f3#
- 1...Sc3
- 2.Sxc3#
- 1...Sb4
- 2.Sc3#
- 1...exd4!
- 1...Rxb1
- 1.Be6?
- threat
- 2.Qxd5#
- 1...Rxb1
- 2.Qxb1#
- 1...Sc3
- 2.Sxc3#
- 1...Sb4
- 2.Sc3#
- 1...fxe6!
- threat
- 1.Bd7?
- 1...Rxb1
- 2.Qxb1#
- 1...Bb2
- 2.Sd2#
- 1...Bd2
- 2.Sxd2#
- 1...Ba3
- 2.Sd2#
- 1...Be3
- 2.f3#
- 1...Sc3
- 2.Sxc3#
- 1...Sb4
- 2.Sc3#
- 1...exd4!
- 1...Rxb1
- 1.Ra4?
- 1...Rxb1
- 2.Qxb1#
- 1...exd4
- 2.Qe7#
- 1...Bb2
- 2.Sd2#
- 1...Bd2
- 2.Sxd2#
- 1...Ba3
- 2.Sd2#
- 1...Be3
- 2.f3#
- 1...Sc3
- 2.Sxc3#
- 1...Sb4!
- 1...Rxb1
- 1.Qc6?
- 1...exd4
- 2.Qe8#
- 1...Bb2
- 2.Sd2#
- 1...Bd2
- 2.Sxd2#
- 1...Ba3
- 2.Sd2#
- 1...Be3
- 2.f3#
- 1...Sc3
- 2.Sxc3#
- 1...Sb4
- 2.Sc3#
- 1...Rxb1+!
- 1...exd4
- 1.Qb2?
- threat
- 2.Qc2#
- 1...Rxb1
- 2.Qxb1#
- 1...Bxb2
- 2.Sd2#
- 1...exd4
- 2.Qxd4#
- 1...Sb4
- 2.Sc3#
- 1...dxc4!
- threat
- 1.Qb4?
- 1...Rxb1
- 2.Qxb1#
- 1...Sxb4
- 2.Sc3#
- 1...exd4
- 2.Qe7#
- 1...Bb2
- 2.Sd2#
- 1...Bd2
- 2.Sxd2#
- 1...Ba3
- 2.Sd2#
- 1...Be3
- 2.f3#
- 1...Sc3
- 2.Sxc3#
- 1...dxc4!
- 1...Rxb1
- 1.Qb6?
- 1...Rxb1
- 2.Qxb1#
- 1...exd4
- 2.Qxd4#
- 1...Bb2
- 2.Sd2#
- 1...Bd2
- 2.Sxd2#
- 1...Ba3
- 2.Sd2#
- 1...Be3
- 2.f3#
- 1...Sc3
- 2.Sxc3#
- 1...Sb4
- 2.Sc3#
- 1...dxc4!
- 1...Rxb1
- 1.Qc7?
- threat
- 2.Qxe5#
- 1...exd4
- 2.Qe7#
- 1...Rxb1+!
- threat
- 1.Qd7?
- 1...dxc4
- 2.Bb7#
- 1...exd4
- 2.Qe8#
- 2.Qe7#
- 1...Bb2
- 2.Sd2#
- 1...Bd2
- 2.Sxd2#
- 1...Ba3
- 2.Sd2#
- 1...Be3
- 2.f3#
- 1...Sc3
- 2.Sxc3#
- 1...Sb4
- 2.Sc3#
- 1...Rxb1+!
- 1...dxc4
- 1.Kc7?
- Keys
- 1.Qb5!
- 1...Rxb1
- 2.Qxb1#
- 1...dxc4
- 2.Qxe5#
- 1...exd4
- 2.Qe8#
- 1...Bb2
- 2.Sd2#
- 1...Bd2
- 2.Sxd2#
- 1...Ba3
- 2.Sd2#
- 1...Be3
- 2.f3#
- 1...Sc3
- 2.Sxc3#
- 1...Sb4
- 2.Sc3#
- 1...Rxb1
- 1.Qb5!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(a);OGATE,P_PINQ(H),XS(A)::QAB(H),XR(a)
- B(b);N_GUARD::S(A)
- B(b);N_GUARD::S(A),XB(b)
- B(b);SBLOCK::P(C)
- S(c);N_GUARD::S(A),XS(c)
- S(c);N_GUARD::S(A)
- P(g);N_SPINP(f),OGATEB,P_SPINP(g),XP(E)::QAR(H)
- Tries
- Try
- K(I);S_FLIGHT
- Vars
- R(a);OGATE,XS(A)::QAB(H),XR(a)
- B(b);N_GUARD::S(A)
- B(b);N_GUARD::S(A),XB(b)
- B(b);SBLOCK::P(C)
- S(c);N_GUARD::S(A),XS(c)
- S(c);N_GUARD::S(A)
- Refutation
- P(g);N_SPINP(f),P_SPINP(g),XP(E)
- Try
- B(J);
- Threat
- QAB1(H),XP(f)
- Vars
- R(a);OGATE,P_PINQ(H),XS(A)::QAB(H),XR(a)
- S(c);N_GUARD::S(A),XS(c)
- S(c);N_GUARD::S(A)
- Refutation
- P(j);XB(J)
- Try
- B(J);
- Vars
- R(a);OGATE,P_PINQ(H),XS(A)::QAB(H),XR(a)
- B(b);N_GUARD::S(A)
- B(b);N_GUARD::S(A),XB(b)
- B(b);SBLOCK::P(C)
- S(c);N_GUARD::S(A),XS(c)
- S(c);N_GUARD::S(A)
- Refutation
- P(g);N_SPINP(f),P_SPINP(g),XP(E)
- Try
- R(D);
- Vars
- R(a);OGATE,P_PINQ(H),XS(A)::QAB(H),XR(a)
- P(g);N_SPINP(f),OGATEB,P_SPINP(g),XP(E)::QAR(H)
- B(b);N_GUARD::S(A)
- B(b);N_GUARD::S(A),XB(b)
- B(b);SBLOCK::P(C)
- S(c);N_GUARD::S(A),XS(c)
- Refutation
- S(c);
- Try
- Q(H);
- Vars
- P(g);N_SPINP(f),OGATEB,P_SPINP(g),XP(E)::QAR(H)
- B(b);N_GUARD::S(A)
- B(b);N_GUARD::S(A),XB(b)
- B(b);SBLOCK::P(C)
- S(c);N_GUARD::S(A),XS(c)
- S(c);N_GUARD::S(A)
- Refutation
- R(a);CHECK,XS(A)
- Try
- Q(H);N_PINP(f)
- Threat
- QAB(H)
- Vars
- R(a);OGATE,P_PINQ(H),XS(A)::QAB(H),XR(a)
- B(b);N_GUARD,XQ(H)::S(A)
- P(g);OGATE,P_SPINP(g),XP(E)::QAR1(H),XP(g)
- S(c);N_GUARD::S(A)
- Refutation
- P(f);XR(D)
- Try
- Q(H);N_PINP(f)
- Vars
- R(a);OGATE,P_PINQ(H),XS(A)::QAB(H),XR(a)
- S(c);N_GUARD,XQ(H)::S(A)
- P(g);OGATEB,P_SPINP(g),XP(E)::QAR(H)
- B(b);N_GUARD::S(A)
- B(b);N_GUARD::S(A),XB(b)
- B(b);SBLOCK::P(C)
- S(c);N_GUARD::S(A),XS(c)
- Refutation
- P(f);XR(D)
- Try
- Q(H);N_PINP(f)
- Vars
- R(a);OGATE,P_PINQ(H),XS(A)::QAB(H),XR(a)
- P(g);OGATE,P_SPINP(g),XP(E)::QAR1(H),XP(g)
- B(b);N_GUARD::S(A)
- B(b);N_GUARD::S(A),XB(b)
- B(b);SBLOCK::P(C)
- S(c);N_GUARD::S(A),XS(c)
- S(c);N_GUARD::S(A)
- Refutation
- P(f);XR(D)
- Try
- Q(H);N_PINP(f)
- Threat
- QAR1(H),XP(g)
- Vars
- P(g);OGATEB,P_SPINP(g),XP(E)::QAR(H)
- Refutation
- R(a);CHECK,XS(A)
- Try
- Q(H);N_PINP(f)
- Vars
- P(f);OGATEB,XR(D)::B(J)
- B(b);N_GUARD::S(A)
- B(b);N_GUARD::S(A),XB(b)
- B(b);SBLOCK::P(C)
- S(c);N_GUARD::S(A),XS(c)
- S(c);N_GUARD::S(A)
- Refutation
- R(a);CHECK,XS(A)
- Try
- Actual
- Q(H);N_PINP(f)
- Vars
- R(a);OGATE,P_PINQ(H),XS(A)::QAB(H),XR(a)
- P(f);OGATE,XR(D)::QAR1(H),XP(g)
- P(g);OGATEB,P_SPINP(g),XP(E)::QAR(H)
- B(b);N_GUARD::S(A)
- B(b);N_GUARD::S(A),XB(b)
- B(b);SBLOCK::P(C)
- S(c);N_GUARD::S(A),XS(c)
- S(c);N_GUARD::S(A)
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