MESON Chess Problem Database
Problem Display
PID: 199249 (1r2Q3/q3bpN1/b6r/N1pp1B2/3k4/1pR5/1K2p2B/8 w - - 0 1)
Prins, Hendrik
van den Berg, Roelof
Suomen Shakki, 1987
#2
7 + 11
SOLUTION
- SOUND
- Sets
- 1...Rxh2
- 2.Sc6#
- 1...Rh3
- 2.Sc6#
- 1...Rh4
- 2.Sc6#
- 1...Rh5
- 2.Sc6#
- 1...Rc6
- 2.Sxc6#
- 1...Rh7
- 2.Sc6#
- 1...Rh8
- 2.Sc6#
- 1...Rb5
- 2.Rd3#
- 1...Ra8
- 2.Sxb3#
- 1...Rc8
- 2.Sxb3#
- 1...Rd8
- 2.Sxb3#
- 1...Rxe8
- 2.Sxb3#
- 1...Bd3
- 2.Rxd3#
- 1...Bb5
- 2.Sxb3#
- 1...Bb7
- 2.Sxb3#
- 2.Rd3#
- 1...Bc8
- 2.Rd3#
- 1...Bh4
- 2.Be5#
- 2.Qe3#
- 2.Qe5#
- 1...Bg5
- 2.Be5#
- 2.Qe5#
- 1...Bd6
- 2.Sc6#
- 2.Bg1#
- 2.Qe3#
- 1...Bf6
- 2.Sc6#
- 2.Bg1#
- 2.Qe3#
- 1...Bd8
- 2.Bg1#
- 2.Be5#
- 2.Qe3#
- 2.Qe5#
- 1...Bf8
- 2.Bg1#
- 2.Be5#
- 2.Qe3#
- 2.Qe5#
- 1...f6
- 2.Sc6#
- 2.Se6#
- 1...Rxh2
- Tries
- 1.Se6+?
- 1...fxe6
- 2.Sc6#
- 1...Rxe6!
- 1...fxe6
- 1.Qa4+?
- 1...Rb4
- 2.Sxb3#
- 1...Bc4
- 2.Rd3#
- 1...c4!
- 1...Rb4
- 1.Qb5?
- threat
- 2.Sxb3#
- 2.Rd3#
- 1...Rxh2
- 2.Sc6#
- 1...Rxb5
- 2.Rd3#
- 1...Bxb5
- 2.Sxb3#
- 1...e1S
- 2.Sxb3#
- 1...Rh3
- 2.Sxb3#
- 2.Sc6#
- 1...c4!
- threat
- 1.Qxb8?
- threat
- 2.Sxb3#
- 2.Bg1#
- 2.Be5#
- 2.Qf4#
- 2.Qe5#
- 1...Rxh2
- 2.Sxb3#
- 2.Sc6#
- 2.Qf4#
- 1...Bd3
- 2.Bg1#
- 2.Rxd3#
- 2.Qe5#
- 1...c4
- 2.Bg1#
- 1...e1Q
- 2.Sxb3#
- 1...e1B
- 2.Sxb3#
- 2.Be5#
- 2.Qf4#
- 2.Qe5#
- 1...e1R
- 2.Sxb3#
- 1...Qb6
- 2.Bg1#
- 2.Be5#
- 2.Qf4#
- 2.Qe5#
- 1...Qb7
- 2.Bg1#
- 2.Be5#
- 2.Qf4#
- 2.Qe5#
- 1...Qc7
- 2.Sxb3#
- 1...Rh3
- 2.Sxb3#
- 2.Sc6#
- 2.Be5#
- 2.Qf4#
- 2.Qe5#
- 1...Rh4
- 2.Sxb3#
- 2.Sc6#
- 2.Bg1#
- 2.Be5#
- 2.Qe5#
- 1...Rb6
- 2.Bg1#
- 2.Be5#
- 2.Qf4#
- 2.Qe5#
- 1...Rd6
- 2.Sxb3#
- 1...Re6
- 2.Sxb3#
- 1...Rg6
- 2.Sxb3#
- 2.Be5#
- 2.Qf4#
- 2.Qe5#
- 1...Bc4
- 2.Bg1#
- 2.Be5#
- 2.Qf4#
- 2.Qe5#
- 1...Bh4
- 2.Sxb3#
- 2.Be5#
- 2.Qf4#
- 2.Qe5#
- 1...Bg5
- 2.Sxb3#
- 2.Be5#
- 2.Qe5#
- 1...Bd6
- 2.Sxb3#
- 2.Sc6#
- 1...Bf6
- 2.Sxb3#
- 2.Sc6#
- 2.Bg1#
- 2.Qf4#
- 1...f6
- 2.Sxb3#
- 2.Sc6#
- 2.Se6#
- 2.Bg1#
- 2.Qf4#
- 1...Qxb8!
- threat
- 1.Se6+?
- Keys
- 1.Qh8!
- threat
- 2.Se6#
- 1...Rhxh8
- 2.Sc6#
- 1...Rbxh8
- 2.Sxb3#
- 1...Bd3
- 2.Rxd3#
- 1...Re6
- 2.Sxe6#
- 1...Rf6
- 2.Qh4#
- 1...Bf6
- 2.Sc6#
- threat
- 1.Qh8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 13
- Sets
- R(g);N_GUARD,XB(B)::S(D)
- R(g);N_GUARD::S(D)
- R(g);N_GUARD::S(D),XR(g)
- R(k);S_CUTB(f)::R1(C)
- R(k);N_GUARD::S(D),XP(b)
- R(k);N_GUARD,XQ(G)::S(D),XP(b)
- B(f);N_GUARD::R1(C),XB(f)
- B(f);S_CUTR(k)::S(D),XP(b)
- B(f);N_GUARD::R1(C)
- Tries
- Try
- S(F);CHECK
- Vars
- P(j);XS(F)::S(D)
- Refutation
- R(g);XS(F)
- Try
- Q(G);CHECK
- Vars
- R(k);P_SPINR(k)::S(D),XP(b)
- B(f);P_SPINB(f)::R1(C)
- Refutation
- P(d);P_SPINP(d)
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- R(g);N_GUARD,XB(B)::S(D)
- R(k);XQ(G)::R1(C)
- B(f);XQ(G)::S(D),XP(b)
- P(a);::S(D),XP(b)
- Refutation
- P(d);
- Try
- Q(G);XR(k)
- Threat
- DUALS(5)
- Vars
- P(d);::B(B)
- P(a);::S(D),XP(b)
- Q(h);::S(D),XP(b)
- R(g);::S(D),XP(b)
- Refutation
- Q(h);XQ(G)
- Try
- Actual
- Q(G);
- Threat
- QAB(G)+S(F),DCHECK
- Vars
- R(g);N_GUARD,XQ(G)::S(D)
- R(k);N_GUARD,XQ(G)::S(D),XP(b)
- B(f);N_GUARD::R1(C),XB(f)
- R(g);::QAB(G)+S(F),DCHECK,XR(g)
- R(g);OGATE::QAR(G)
- B(i);S_CUTR(g)::S(D)
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