MESON Chess Problem Database
Problem Display
PID: 10331 (nK4b1/1N2B2q/3N1p2/rp1p4/1k3pQ1/pBp5/P2p4/1R2r3 w - - 0 1)
van Dijk, Nils Gustav Gerard
3rd Prize, Schweizerische Schachzeitung, 1963
#2
8 + 13
| 3174 | The Two-move Chess Problem Tradition and Development | 1966 |
SOLUTION
- SOUND
- Sets
- 1...Qxb1
- 2.Se4#
- 1...Qc2
- 2.Se4#
- 1...Qd3
- 2.Se4#
- 1...Qe4
- 2.Sxe4#
- 1...Qf5
- 2.Se4#
- 1...Qg6
- 2.Se4#
- 1...Qh1
- 2.Se4#
- 2.Bd1#
- 1...Qh2
- 2.Se4#
- 2.Bd1#
- 1...Qh3
- 2.Se4#
- 2.Bd1#
- 1...Qh4
- 2.Se4#
- 2.Bd1#
- 1...Qh5
- 2.Se4#
- 2.Bd1#
- 1...Qh6
- 2.Se4#
- 2.Bd1#
- 1...Qxe7
- 2.Bd1#
- 1...Qf7
- 2.Bd1#
- 1...Qg7
- 2.Bd1#
- 1...Qh8
- 2.Se4#
- 2.Bd1#
- 1...Rxb1
- 2.Sf7#
- 1...Rc1
- 2.Sf7#
- 1...Rd1
- 2.Sf7#
- 1...Rf1
- 2.Sf7#
- 1...Rg1
- 2.Sf7#
- 1...Rh1
- 2.Sf7#
- 1...Re2
- 2.Bc2#
- 1...Re3
- 2.Bc2#
- 1...Re4
- 2.Bd1#
- 2.Bc2#
- 1...Re5
- 2.Bc2#
- 1...Re6
- 2.Bc2#
- 1...Rxe7
- 2.Bc2#
- 1...Be6
- 2.Sf7#
- 1...Bf7
- 2.Se4#
- 1...d1B
- 2.Bc2#
- 1...f5
- 2.Bd1#
- 1...Qxb1
- Tries
- 1.Qd1?
- threat
- 2.Bc2#
- 1...Qxb1
- 2.Se4#
- 1...Rxd1
- 2.Sf7#
- 1...c2
- 2.Qxd2#
- 1...Qc2
- 2.Se4#
- 2.Bxc2#
- 1...d4!
- threat
- 1.Qf5?
- threat
- 2.Bd1#
- 1...Qxf5
- 2.Se4#
- 1...Rxb1
- 2.Sf7#
- 1...d1Q
- 2.Bxd1#
- 1...d1S
- 2.Bxd1#
- 1...d1B
- 2.Bxd1#
- 2.Bc2#
- 1...d1R
- 2.Bxd1#
- 1...Rc1
- 2.Sf7#
- 1...Rd1
- 2.Sf7#
- 2.Bxd1#
- 1...d4
- 2.Qc5#
- 1...c2!
- threat
- 1.Qg1?
- threat
- 2.Qd4#
- 2.Qc5#
- 1...Rxg1
- 2.Sf7#
- 1...d1Q
- 2.Qc5#
- 1...d1R
- 2.Qc5#
- 1...Qd3
- 2.Se4#
- 2.Qc5#
- 1...Qe4
- 2.Sxe4#
- 2.Qc5#
- 1...Re3
- 2.Bc2#
- 1...Re4
- 2.Bd1#
- 2.Bc2#
- 2.Qc5#
- 1...Sb6
- 2.Qc5#
- 1...d4!
- threat
- 1.Qxf4+?
- 1...Qe4
- 2.Sxe4#
- 2.Sf5#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 2.Bd1#
- 1...Re4
- 2.Sf7#
- 2.Bd1#
- 2.Bc2#
- 1...d4!
- 1...Qe4
- 1.Qg7?
- threat
- 2.Se4#
- 1...Qxg7
- 2.Bd1#
- 1...Rxe7
- 2.Bc2#
- 1...Qe4
- 2.Sxe4#
- 1...Re4
- 2.Sxe4#
- 2.Bd1#
- 2.Bc2#
- 1...Re5
- 2.Bc2#
- 1...Re6
- 2.Bc2#
- 1...Ra6!
- threat
- 1.Qd1?
- Keys
- 1.Qe2!
- threat
- 2.Sf7#
- 1...Qxe7
- 2.Bd1#
- 1...Rxe2
- 2.Bc2#
- 1...c2
- 2.Qxd2#
- 1...Qe4
- 2.Sxe4#
- 1...Qf7
- 2.Sxf7#
- 2.Bd1#
- 1...Ra6
- 2.Qxb5#
- 1...Bf7
- 2.Sc4#
- 2.Se4#
- 2.Sxb5#
- 2.Sf5#
- 2.Sxf7#
- 2.Sc8#
- 2.Se8#
- threat
- 1.Qe2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 21
- Sets
- Q(k);N_GUARD,XR(A)::B(G)+S(E)
- Q(k);N_GUARD::B(G)+S(E)
- Q(k);N_GUARD,N_SPINP(f)::B(G)+S(E),XQ(k)
- Q(k);N_GUARD,XB(G)::R(A)+B(C)
- Q(k);N_GUARD::R(A)+B(C)
- R(a);N_GUARD,XR(A)::B(G)+S(E)
- R(a);N_GUARD::B(G)+S(E)
- R(a);N_GUARD::R(A)+B(C)
- R(a);N_GUARD,XB(G)::R(A)+B(C)
- B(m);S_CUTR(a)::B(G)+S(E)
- B(m);S_CUTQ(k)::B(G)+S(E)
- P(b);S_CUTR(a)::R(A)+B(C)
- P(j);S_CUTQ(k)::R(A)+B(C)
- Tries
- Try
- Q(D);N_PINP(f)
- Threat
- R(A)+B(C)
- Vars
- Q(k);N_GUARD,XR(A)::B(G)+S(E)
- R(a);N_GUARD,XQ(D)::B(G)+S(E)
- P(d);OGATEB::QAB(D),XP(b)
- Refutation
- P(i);
- Try
- Q(D);N_PINP(f)
- Threat
- R(A)+B(C)
- Vars
- Q(k);N_GUARD,XQ(D)::B(G)+S(E)
- R(a);N_GUARD,XR(A)::B(G)+S(E)
- P(b);::R(A)+B(C),XQ(b)
- P(b);::R(A)+B(C),XS(b)
- P(b);::R(A)+B(C),XR(b)
- R(a);N_GUARD::B(G)+S(E)
- P(i);OGATE::QAB1(D)
- Refutation
- P(d);
- Try
- Q(D);N_PINP(f)
- Threat
- DUALS(2)
- Vars
- R(a);N_GUARD,XQ(D)::B(G)+S(E)
- P(b);::QAB1(D)
- R(a);N_GUARD::R(A)+B(C)
- S(l);::QAB1(D)
- Refutation
- P(i);
- Try
- Q(D);CHECK,XP(f)
- Refutation
- P(i);P_SPINP(i)
- Try
- Q(D);N_PINP(f)
- Threat
- B(G)+S(E)
- Vars
- Q(k);N_GUARD,XQ(D)::R(A)+B(C)
- R(a);N_GUARD,XB(G)::R(A)+B(C)
- Q(k);::B(G)+S(E),XQ(k)
- R(a);N_GUARD::R(A)+B(C)
- Refutation
- R(g);
- Try
- Actual
- Q(D);N_PINP(f)
- Threat
- B(G)+S(E)
- Vars
- Q(k);N_GUARD,XB(G)::R(A)+B(C)
- R(a);N_GUARD,XQ(D)::R(A)+B(C)
- P(d);OGATEB::QAB(D),XP(b)
- Q(k);N_GUARD::B(G)+S(E),XQ(k)
- R(g);N_GUARD::QAR1(D),XP(h)
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