MESON Chess Problem Database
Problem Display
PID: 177959 (KB6/1P4Q1/B1P1N3/p6N/pk4qR/pP5r/P1P4b/5nrb w - - 0 1)
Bavilov, V
Sahs (Latvia), 1987
#2
12 + 10
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Qc4
- 2.Rxc4#
- 1...Qd4
- 2.Qxd4#
- 1...Qf4
- 2.Bd6#
- 1...Rgg3
- 2.Bd6#
- 1...Rhg3
- 2.Bd6#
- 1...Rxh4
- 2.c3#
- 1...Bf3
- 2.c3#
- 1...Be4
- 2.Qd4#
- 1...Bg3
- 2.c3#
- 1...Bf4
- 2.Qd4#
- 1...Bd6
- 2.Bxd6#
- 1...Se3
- 2.c3#
- 1...Sg3
- 2.Bd6#
- 2.c3#
- 1...Qc4
- Tries
- 1.Sg3?
- threat
- 2.Bd6#
- 2.c3#
- 1...Rgxg3
- 2.Bd6#
- 1...Rhxg3
- 2.Bd6#
- 1...Bxg3
- 2.c3#
- 1...Qd4
- 2.Qxd4#
- 1...axb3!
- threat
- 1.Shf4?
- threat
- 2.Bd6#
- 2.Qd4#
- 1...Qxe6
- 2.Sd3#
- 1...Qxf4
- 2.Bd6#
- 1...Qxg7
- 2.Sd5#
- 1...Bxf4
- 2.Qd4#
- 1...axb3
- 2.Qd4#
- 1...Qd1
- 2.Sd3#
- 2.Sd5#
- 1...Qe2
- 2.Sd3#
- 2.Sd5#
- 2.Bd6#
- 1...Qf5
- 2.Sd3#
- 2.Sd5#
- 2.Qd4#
- 1...Qh5
- 2.Sd3#
- 2.Sd5#
- 2.Qd4#
- 1...Qg5
- 2.Sd3#
- 2.Sd5#
- 2.Qd4#
- 1...Rd3
- 2.Sxd3#
- 1...Bd5
- 2.Sxd5#
- 2.Bd6#
- 1...Sd2
- 2.Bd6#
- 1...Se3
- 2.Sd3#
- 2.Bd6#
- 2.c3#
- 1...Rc3!
- threat
- 1.Bxh2?
- threat
- 2.Bd6#
- 2.b8Q#
- 2.b8R#
- 1...Qxh4
- 2.Bd6#
- 2.b8Q#
- 2.b8R#
- 1...Rxh2
- 2.c3#
- 2.b8Q#
- 2.b8R#
- 1...Rxb3
- 2.Bd6#
- 2.b8Q#
- 2.b8R#
- 1...Rxh4
- 2.Bd6#
- 2.c3#
- 2.b8Q#
- 2.b8R#
- 1...Bxc6
- 2.Bd6#
- 1...Sxh2
- 2.b8Q#
- 2.b8R#
- 1...Qd4
- 2.Qxd4#
- 1...Qc4
- 2.Bd6#
- 2.Rxc4#
- 2.b8Q#
- 2.b8R#
- 1...Qe4
- 2.Bd6#
- 2.b8Q#
- 2.b8R#
- 1...Qf4
- 2.b8Q#
- 2.b8R#
- 1...Rg2
- 2.Bd6#
- 2.b8Q#
- 2.b8R#
- 1...Rgg3
- 2.b8Q#
- 2.b8R#
- 1...Rc3
- 2.b8Q#
- 2.b8R#
- 1...Rd3
- 2.b8Q#
- 2.b8R#
- 1...Re3
- 2.Bd6#
- 2.b8Q#
- 2.b8R#
- 1...Rf3
- 2.Bd6#
- 2.b8Q#
- 2.b8R#
- 1...Rhg3
- 2.b8Q#
- 2.b8R#
- 1...Bg2
- 2.Bd6#
- 2.b8Q#
- 2.b8R#
- 1...Bf3
- 2.Bd6#
- 2.c3#
- 2.b8Q#
- 2.b8R#
- 1...Be4
- 2.Bd6#
- 2.Qd4#
- 2.b8Q#
- 2.b8R#
- 1...Bd5
- 2.Bd6#
- 2.b8Q#
- 2.b8R#
- 1...Sd2
- 2.Bd6#
- 2.b8Q#
- 2.b8R#
- 1...Se3
- 2.Bd6#
- 2.c3#
- 2.b8Q#
- 2.b8R#
- 1...Sg3
- 2.c3#
- 2.b8Q#
- 2.b8R#
- 1...axb3!
- threat
- 1.Bg3?
- threat
- 2.c3#
- 2.b8Q#
- 2.b8R#
- 1...Qxh4
- 2.c3#
- 2.b8Q#
- 2.b8R#
- 1...Rgxg3
- 2.b8Q#
- 2.b8R#
- 1...Rhxg3
- 2.b8Q#
- 2.b8R#
- 1...Rxh4
- 2.c3#
- 2.b8Q#
- 2.b8R#
- 1...Bxc6
- 2.c3#
- 1...Bxg3
- 2.c3#
- 1...Sxg3
- 2.c3#
- 2.b8Q#
- 2.b8R#
- 1...Qd4
- 2.Qxd4#
- 1...Qc4
- 2.Rxc4#
- 2.c3#
- 2.b8Q#
- 2.b8R#
- 1...Qe4
- 2.c3#
- 2.b8Q#
- 2.b8R#
- 1...Qf4
- 2.c3#
- 2.b8Q#
- 2.b8R#
- 1...Rg2
- 2.Rxg4#
- 2.c3#
- 2.b8Q#
- 2.b8R#
- 1...Bg2
- 2.c3#
- 2.b8Q#
- 2.b8R#
- 1...Bf3
- 2.c3#
- 2.b8Q#
- 2.b8R#
- 1...Be4
- 2.Qd4#
- 2.c3#
- 2.b8Q#
- 2.b8R#
- 1...Bd5
- 2.c3#
- 2.b8Q#
- 2.b8R#
- 1...Sd2
- 2.c3#
- 2.b8Q#
- 2.b8R#
- 1...Se3
- 2.c3#
- 2.b8Q#
- 2.b8R#
- 1...axb3!
- threat
- 1.Rxg4+?
- 1...Be4
- 2.Rxe4#
- 2.Qd4#
- 1...Bf4
- 2.Bd6#
- 2.Qd4#
- 1...Rxg4!
- 1...Be4
- 1.Sg3?
- Keys
- 1.Bf4!
- threat
- 2.Qd4#
- 2.b8Q#
- 2.b8R#
- 1...Qxh5
- 2.Bd2#
- 2.Bd6#
- 2.Qd4#
- 1...Qxe6
- 2.Bd6#
- 1...Qxf4
- 2.b8Q#
- 2.b8R#
- 1...Qxh4
- 2.Qd4#
- 2.b8Q#
- 2.b8R#
- 1...Qxg7
- 2.Bd2#
- 1...Rxb3
- 2.Qd4#
- 2.b8Q#
- 2.b8R#
- 1...Rxh4
- 2.Qd4#
- 2.c3#
- 2.b8Q#
- 2.b8R#
- 1...Bxc6
- 2.Qd4#
- 1...Bxf4
- 2.Qd4#
- 1...axb3
- 2.Qd4#
- 1...Qd1
- 2.Bd2#
- 2.Bd6#
- 2.b8Q#
- 2.b8R#
- 1...Qe2
- 2.Bd2#
- 2.Bd6#
- 1...Qf3
- 2.Bd2#
- 2.Bd6#
- 2.Qd4#
- 2.b8Q#
- 2.b8R#
- 1...Qf5
- 2.Bd2#
- 2.Bd6#
- 2.Qd4#
- 1...Qg2
- 2.Bd2#
- 2.Bd6#
- 2.Qd4#
- 2.b8Q#
- 2.b8R#
- 1...Qg3
- 2.Bd2#
- 2.Bd6#
- 2.Qd4#
- 2.b8Q#
- 2.b8R#
- 1...Qg5
- 2.Bd2#
- 2.Bd6#
- 2.Qd4#
- 1...Qg6
- 2.Bd2#
- 2.Bd6#
- 2.Qd4#
- 2.b8Q#
- 2.b8R#
- 1...Rg2
- 2.Qd4#
- 2.b8Q#
- 2.b8R#
- 1...Rgg3
- 2.Bd6#
- 2.Qd4#
- 2.b8Q#
- 2.b8R#
- 1...Rc3
- 2.b8Q#
- 2.b8R#
- 1...Rd3
- 2.b8Q#
- 2.b8R#
- 1...Re3
- 2.Qd4#
- 2.b8Q#
- 2.b8R#
- 1...Rf3
- 2.Qd4#
- 2.b8Q#
- 2.b8R#
- 1...Rhg3
- 2.Bd6#
- 2.Qd4#
- 2.b8Q#
- 2.b8R#
- 1...Bg2
- 2.Qd4#
- 2.b8Q#
- 2.b8R#
- 1...Bf3
- 2.Qd4#
- 2.c3#
- 2.b8Q#
- 2.b8R#
- 1...Be4
- 2.Qd4#
- 2.b8Q#
- 2.b8R#
- 1...Bd5
- 2.b8Q#
- 2.b8R#
- 1...Bg3
- 2.Qd4#
- 2.c3#
- 2.b8Q#
- 2.b8R#
- 1...Sd2
- 2.b8Q#
- 2.b8R#
- 1...Se3
- 2.c3#
- 2.b8Q#
- 2.b8R#
- 1...Sg3
- 2.Bd2#
- 2.Bd6#
- 2.Qd4#
- 2.c3#
- 2.b8Q#
- 2.b8R#
- threat
- 1.Bf4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 11
- Sets
- Q(i);OGATE::R1(D),XQ(i)
- Q(i);N_GUARD::QAR2(J),XQ(i)
- Q(i);S_CUTB(d)::B(L)
- R(b);S_CUTB(d)::B(L)
- R(f);S_CUTB(d)::B(L)
- R(f);N_GUARD,N_SPINQ(i),XR(D)::P(B)
- B(c);S_CUTR(f)::P(B)
- B(c);N_SPINQ(i),S_CUTQ(i)::QAR2(J)
- B(d);S_CUTR(f)::P(B)
- B(d);N_SPINQ(i),S_CUTQ(i)::QAR2(J)
- B(d);N_GUARD::B(L),XB(d)
- S(a);S_CUTR(f)::P(B)
- Tries
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- R(b);XS(E)::B(L)
- R(f);XS(E)::B(L)
- B(d);XS(E)::P(B)
- Q(i);N_GUARD::QAR2(J),XQ(i)
- Refutation
- P(g);XP(C)
- Try
- S(E);N_PINQ(i)
- Threat
- DUALS(2)
- Vars
- Q(i);XS(H)::R(D)+S(E),DCHECK
- Q(i);P_SPINQ(i),XS(E)::B(L)
- Q(i);XQ(J)::R(D)+S(E),DCHECK
- B(d);XS(E)::QAR2(J)
- P(g);XP(C)::QAR2(J)
- R(f);N_GUARD::S(E),XR(f)
- S(a);::B(L)
- Refutation
- R(f);
- Try
- B(L);XB(d)
- Threat
- DUALS(3)
- Vars
- B(c);P_PINP(I),XP(G)::B(L)
- S(a);XB(L)::P=Q
- Q(i);N_GUARD::QAR2(J),XQ(i)
- Q(i);::P=Q
- R(b);::P=Q
- R(f);::P=Q
- Refutation
- P(g);XP(C)
- Try
- B(L);
- Threat
- DUALS(3)
- Vars
- R(b);XB(L)::P=Q
- R(f);XB(L)::P=Q
- B(c);P_PINP(I),XP(G)::P(B)
- B(d);XB(L)::P(B)
- Q(i);N_GUARD::QAR2(J),XQ(i)
- Refutation
- P(g);XP(C)
- Try
- R(D);CHECK,XQ(i)
- Refutation
- R(b);XR(D)
- Try
- Actual
- B(L);N_PINQ(i)
- Threat
- DUALS(3)
- Vars
- Q(i);XS(H)::R(D)+B(L),DCHECK
- Q(i);P_SPINQ(i),XB(L)::P=Q
- Q(i);XQ(J)::R(D)+B(L),DCHECK
- B(c);P_PINP(I),XP(G)::QAR2(J)
- B(d);XB(L)::QAR2(J)
- P(g);XP(C)::QAR2(J)
- R(f);::P=Q
- B(c);::P=Q
- S(a);::P=Q
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