MESON Chess Problem Database
Problem Display
PID: 55875 (r7/1N1p3n/1R1Pk2K/3q1R2/1Qnp2Pp/5N2/B7/2r5 w - - 0 1)
Mansfield, Comins
2nd HM., Mongolia TT, 1978
#2
9 + 9
| 4054 | Complete Mansfield/III | 1999 |
SOLUTION
- SOUND
- Sets
- 1...Qxf3
- 2.Sc5#
- 1...Qe4
- 2.Sc5#
- 1...Qc6
- 2.Sxd4#
- 1...Qxb7
- 2.Sxd4#
- 1...Qa5
- 2.Sxd4#
- 1...Qb5
- 2.Sxd4#
- 1...Qc5
- 2.Sxc5#
- 1...Qxd6
- 2.Qxd6#
- 1...Rxa2
- 2.Sd8#
- 1...Ra3
- 2.Sd8#
- 1...Ra4
- 2.Sd8#
- 1...Ra5
- 2.Sd8#
- 1...Ra6
- 2.Sd8#
- 1...Ra7
- 2.Sd8#
- 1...Rd8
- 2.Sxd8#
- 1...Sb2
- 2.Sxd4#
- 2.Bxd5#
- 1...Sd2
- 2.Sxd4#
- 2.Bxd5#
- 1...Sa3
- 2.Sxd4#
- 2.Bxd5#
- 1...Se3
- 2.Sxd4#
- 1...Sa5
- 2.Sxd4#
- 2.Bxd5#
- 1...Se5
- 2.Sxd4#
- 1...Sxb6
- 2.Sxd4#
- 1...Sxd6
- 2.Qxd6#
- 1...Sg5
- 2.Sxg5#
- 1...Sf6
- 2.Sg5#
- 1...Sf8
- 2.Sg5#
- 1...Qxf3
- Tries
- 1.Qe1+?
- 1...Qe4
- 2.Sxd4#
- 2.Sc5#
- 2.Qxe4#
- 1...Qe5
- 2.Qxe5#
- 1...Se3
- 2.Sxd4#
- 2.Bxd5#
- 1...Se5
- 2.Sxd4#
- 2.Qxe5#
- 1...Rxe1!
- 1...Qe4
- 1.Qa5?
- threat
- 2.Qxd5#
- 1...Qxf3
- 2.Sc5#
- 2.Qe5#
- 1...Qxb7
- 2.Sxd4#
- 2.Qe5#
- 1...Qxa5
- 2.Sxd4#
- 1...Qxf5
- 2.Qxf5#
- 1...Qxd6
- 2.Qe5#
- 1...Rxa5
- 2.Sd8#
- 1...Sxa5
- 2.Sxd4#
- 2.Bxd5#
- 1...Sxb6
- 2.Sxd4#
- 1...Sf6
- 2.Sg5#
- 1...Qe4
- 2.Sc5#
- 1...Qc6
- 2.Sxd4#
- 2.Qe5#
- 1...Qb5
- 2.Sxd4#
- 1...Qc5
- 2.Sxc5#
- 1...Qe5
- 2.Qxe5#
- 1...Se3
- 2.Sxd4#
- 1...Sxd6!
- threat
- 1.Qc5?
- threat
- 2.Qxd5#
- 1...Qxf3
- 2.Qe5#
- 1...Qxb7
- 2.Sxd4#
- 2.Qe5#
- 1...Qxc5
- 2.Sxc5#
- 1...Qxf5
- 2.Qxf5#
- 1...Qxd6
- 2.Qxd6#
- 2.Qe5#
- 1...Sxb6
- 2.Sxd4#
- 1...Sxd6
- 2.Qxd6#
- 1...Sf6
- 2.Sg5#
- 1...Qc6
- 2.Sxd4#
- 2.Qe5#
- 1...Qe5
- 2.Qxe5#
- 1...Ra5
- 2.Sd8#
- 1...Se3
- 2.Sxd4#
- 1...Qe4!
- threat
- 1.Qxc4?
- threat
- 2.Sxd4#
- 2.Sc5#
- 2.Qe2#
- 2.Qxd5#
- 1...Qxc4
- 2.Sxd4#
- 2.Sc5#
- 1...Rxa2
- 2.Sxd4#
- 2.Sc5#
- 2.Sd8#
- 2.Qxd5#
- 1...Sf6
- 2.Sg5#
- 1...Rd1
- 2.Sc5#
- 2.Qe2#
- 2.Qxd5#
- 1...Re1
- 2.Sxd4#
- 2.Sc5#
- 2.Qxd5#
- 1...Rc2
- 2.Sxd4#
- 2.Sc5#
- 2.Qxd5#
- 1...Rc3
- 2.Sxd4#
- 2.Sc5#
- 2.Qxd5#
- 1...Ra3
- 2.Sxd4#
- 2.Sc5#
- 2.Sd8#
- 2.Qxd5#
- 1...Ra5
- 2.Sxd4#
- 2.Sd8#
- 2.Qe2#
- 1...Rc8
- 2.Sxd4#
- 2.Qe2#
- 2.Qxd5#
- 1...Sg5
- 2.Sxd4#
- 2.Sxg5#
- 2.Sc5#
- 2.Qxd5#
- 1...d3
- 2.Sd4#
- 2.Sc5#
- 2.Qxd5#
- 2.Qe4#
- 1...Rxc4!
- threat
- 1.Qe1+?
- Keys
- 1.Qb5!
- threat
- 2.Qxd5#
- 1...Qxf3
- 2.Sc5#
- 2.Qe5#
- 1...Qxb7
- 2.Sxd4#
- 2.Qe5#
- 1...Qxb5
- 2.Sxd4#
- 1...Qxf5
- 2.Qxf5#
- 1...Qxd6
- 2.Qe5#
- 1...Sxb6
- 2.Sxd4#
- 2.Qe2#
- 1...Sxd6
- 2.Qe2#
- 1...Sf6
- 2.Sg5#
- 1...Qe4
- 2.Sc5#
- 1...Qc6
- 2.Sxd4#
- 2.Qe5#
- 1...Qc5
- 2.Sxc5#
- 1...Qe5
- 2.Qxe5#
- 1...Ra5
- 2.Sd8#
- 1...Se3
- 2.Sxd4#
- threat
- 1.Qb5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 2
- REMOVED MATES = 14
- Sets
- Q(e);N_GUARD,P_SPINS(b),XS(B)::S(I)
- Q(e);N_GUARD,P_SPINS(b)::S(I)
- Q(e);N_GUARD,P_SPINS(b)::S(B),XP(c)
- Q(e);N_GUARD,P_SPINS(b),XS(I)::S(B),XP(c)
- Q(e);N_GUARD,P_SPINS(b)::S(I),XQ(e)
- Q(e);OGATE,P_SPINQ(e),P_SPINS(b),XP(G)::QAR1(C),XQ(e)
- R(i);N_GUARD,XB(A)::S(I)
- R(i);N_GUARD::S(I)
- R(i);N_GUARD::S(I),XR(i)
- S(b);P_SPINQ(e)::S(B),XP(c)
- S(b);P_SPINQ(e),XR(F)::S(B),XP(c)
- S(b);OGATE,P_SPINQ(e),P_SPINS(b),XP(G)::QAR1(C),XS(b)
- S(h);N_GUARD::S(B),XS(h)
- S(h);N_GUARD::S(B)
- Tries
- Try
- Q(C);CHECK
- Vars
- Q(e);N_GUARD,P_SPINQ(e),P_SPINS(b)::QAR1(C),XQ(e)
- Refutation
- R(a);XQ(C)
- Try
- Q(C);
- Threat
- QAB1(C),XQ(e)
- Vars
- Q(e);N_GUARD,P_SPINS(b),XQ(C)::S(B),XP(c)
- Q(e);OGATE,P_SPINS(b),XR(E)::QAB1(C),XQ(e)
- Q(e);OGATE,P_SPINQ(e),P_SPINS(b),XP(G)::QAR1(C)
- R(i);N_GUARD,XQ(C)::S(I)
- S(b);P_SPINQ(e),XR(F)::S(B),XP(c)
- S(h);N_GUARD::S(B)
- Q(e);N_GUARD,P_SPINS(b)::S(I)
- Q(e);N_GUARD,P_SPINS(b)::S(B),XP(c)
- Q(e);N_GUARD,P_SPINS(b)::S(I),XQ(e)
- Q(e);OGATE,P_SPINS(b)::QAR1(C),XQ(e)
- S(b);P_SPINQ(e)::S(B),XP(c)
- Refutation
- S(b);P_SPINQ(e),P_SPINS(b),XP(G)
- Try
- Q(C);
- Threat
- QAB1(C),XQ(e)
- Vars
- Q(e);OGATE,P_SPINS(b),XS(B)::QAR1(C)
- Q(e);P_SPINS(b),XQ(C)::S(I),XQ(e)
- Q(e);OGATE,P_SPINS(b),XR(E)::QAB1(C),XQ(e)
- S(b);P_SPINQ(e),XR(F)::S(B),XP(c)
- S(b);OGATE,P_SPINQ(e),P_SPINS(b),XP(G)::QAR1(C),XS(b)
- S(h);N_GUARD::S(B)
- Q(e);OGATE,P_SPINS(b)::QAR1(C),XQ(e)
- R(i);N_GUARD::S(I)
- S(b);P_SPINQ(e)::S(B),XP(c)
- Refutation
- Q(e);P_SPINS(b)
- Try
- Q(C);P_PINQ(e),XS(b)
- Threat
- DUALS(4)
- Vars
- S(h);N_GUARD::S(B)
- Refutation
- R(a);N_SPINQ(e),XQ(C)
- Try
- Actual
- Q(C);
- Threat
- QAB1(C),XQ(e)
- Vars
- Q(e);N_GUARD,P_SPINS(b),XQ(C)::S(B),XP(c)
- Q(e);OGATE,P_SPINS(b),XR(E)::QAB1(C),XQ(e)
- Q(e);OGATE,P_SPINQ(e),P_SPINS(b),XP(G)::QAR1(C)
- S(b);OGATE,P_SPINQ(e),P_SPINS(b),XP(G)::QAR(C)
- S(h);N_GUARD::S(B)
- Q(e);N_GUARD,P_SPINS(b)::S(I)
- Q(e);N_GUARD,P_SPINS(b)::S(I),XQ(e)
- Q(e);OGATE,P_SPINS(b)::QAR1(C),XQ(e)
- R(i);N_GUARD::S(I)
- S(b);P_SPINQ(e)::S(B),XP(c)
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