MESON Chess Problem Database
Problem Display
PID: 265585 (8/7B/2p4R/1N1pk3/2Qnp1R1/3r4/2Np4/3K4 w - - 0 1)
Dombrovskis, Alfreds A
Die Schwalbe, 1972
#2
7 + 7
SOLUTION
- SOUND
- Sets
- 1...Ra3
- 2.Qxd4#
- 1...Rb3
- 2.Qxd4#
- 1...Rc3
- 2.Qxd4#
- 1...Re3
- 2.Qxd4#
- 1...Rf3
- 2.Qxd4#
- 1...Rg3
- 2.Qxd4#
- 1...Rh3
- 2.Qxd4#
- 1...cxb5
- 2.Qc7#
- 1...Ra3
- Tries
- 1.Scxd4?
- threat
- 2.Sxc6#
- 2.Re6#
- 1...Rxd4
- 2.Qxd4#
- 1...cxb5
- 2.Sc6#
- 2.Re6#
- 1...c5
- 2.Sc6#
- 2.Re6#
- 1...dxc4!
- threat
- 1.Sbxd4?
- threat
- 2.Sxc6#
- 2.Re6#
- 1...Rxd4
- 2.Qxd4#
- 1...c5
- 2.Sc6#
- 2.Re6#
- 1...dxc4!
- threat
- 1.Sd6?
- threat
- 2.Sf7#
- 1...Rf3
- 2.Qxd4#
- 1...dxc4!
- threat
- 1.Sc7?
- 1...Sxc2
- 2.Re6#
- 1...dxc4
- 2.Rxe4#
- 1...Se6
- 2.Rxe6#
- 1...Ra3
- 2.Qxd4#
- 1...Rb3
- 2.Qxd4#
- 1...Rc3
- 2.Qxd4#
- 1...Re3
- 2.Qxd4#
- 1...Rf3
- 2.Qxd4#
- 1...Rg3
- 2.Qxd4#
- 1...Rh3
- 2.Qxd4#
- 1...Se2
- 2.Re6#
- 1...Sb3
- 2.Re6#
- 1...Sf3
- 2.Re6#
- 1...Sb5
- 2.Re6#
- 1...Sf5
- 2.Re6#
- 1...c5
- 2.Qxd5#
- 1...e3!
- 1...Sxc2
- 1.Rg5+?
- 1...Sf5
- 2.Rxf5#
- 1...Kf4!
- 1...Sf5
- 1.Qc5?
- threat
- 2.Rxe4#
- 2.Qd6#
- 1...Sxb5
- 2.Rxe4#
- 2.Qe7#
- 1...e3
- 2.Re4#
- 2.Qd6#
- 1...Re3
- 2.Qxd4#
- 2.Qd6#
- 1...Sf5!
- threat
- 1.Qxc6?
- threat
- 2.Qd6#
- 2.Qf6#
- 2.Qc7#
- 1...Sxb5
- 2.Rh5#
- 2.Re6#
- 2.Qe8#
- 2.Qe6#
- 2.Qf6#
- 1...Rc3
- 2.Qd6#
- 2.Qf6#
- 1...Rf3
- 2.Qd6#
- 2.Qc7#
- 1...Sf5
- 2.Re6#
- 2.Qe6#
- 2.Qf6#
- 1...Se6
- 2.Rxe6#
- 2.Qd6#
- 2.Qxe6#
- 1...Sxc6!
- threat
- 1.Scxd4?
- Keys
- 1.Sb4!
- 1...Sxb5
- 2.Sxc6#
- 1...dxc4
- 2.Rxe4#
- 1...cxb5
- 2.Qxd5#
- 2.Qc7#
- 1...Ra3
- 2.Qxd4#
- 1...Rb3
- 2.Qxd4#
- 1...Rc3
- 2.Qxd4#
- 1...Re3
- 2.Qxd4#
- 1...Rf3
- 2.Qxd4#
- 1...Rg3
- 2.Qxd4#
- 1...Rh3
- 2.Qxd4#
- 1...Sc2
- 2.Sxc6#
- 1...Se2
- 2.Sxc6#
- 1...Sb3
- 2.Sxc6#
- 1...Sf3
- 2.Sxc6#
- 1...Sf5
- 2.Sxc6#
- 1...Se6
- 2.Sxc6#
- 1...e3
- 2.Sxd3#
- 1...c5
- 2.Qxd5#
- 1...Sxb5
- 1.Sb4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 10
- REMOVED MATES = 1
- Sets
- R(b);N_GUARD::QAB1(C),XS(c)
- P(g);OGATE,XS(E)::QAB(C)
- Tries
- Try
- S(B);XS(c)
- Threat
- DUALS(2)
- Vars
- R(b);OGATE,XS(B)::QAB1(C),XR(b)
- Refutation
- P(e);XQ(C)
- Try
- S(E);XS(c)
- Threat
- DUALS(2)
- Vars
- R(b);OGATE,XS(E)::QAB1(C),XR(b)
- Refutation
- P(e);XQ(C)
- Try
- S(E);
- Threat
- S(E)
- Vars
- R(b);N_GUARD::QAB1(C),XS(c)
- Refutation
- P(e);XQ(C)
- Try
- S(E);
- Vars
- S(c);N_GUARD,XS(B)::R1(F)
- P(e);N_GUARD,XQ(C)::R1(D),XP(d)
- S(c);N_GUARD::R1(F),XS(c)
- R(b);N_GUARD::QAB1(C),XS(c)
- S(c);N_GUARD::R1(F)
- P(g);N_GUARD::QAR1(C),XP(e)
- Refutation
- P(d);
- Try
- R(D);CHECK
- Vars
- S(c);N_GUARD,P_SPINS(c)::R1(D),XS(c)
- Refutation
- K(f);S_FLIGHT
- Try
- Q(C);P_PINP(e)
- Threat
- DUALS(2)
- Refutation
- S(c);
- Try
- Q(C);XP(g)
- Threat
- DUALS(3)
- Refutation
- S(c);XQ(C)
- Try
- Actual
- S(B);
- Vars
- S(c);N_GUARD,XS(E)::S(B),XP(g)
- P(e);N_GUARD,XQ(C)::R1(D),XP(d)
- R(b);N_GUARD::QAB1(C),XS(c)
- S(c);N_GUARD::S(B),XP(g)
- P(d);N_GUARD::S(B),XR(b)
- P(g);N_GUARD::QAR1(C),XP(e)
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