MESON Chess Problem Database
Problem Display
PID: 265987 (1B6/3pp2K/3Nk1Pp/2Qp1R2/3r2r1/4qP1B/4N3/4R3 w - - 0 1)
Haring, Jacobus
Die Schwalbe, 1973
#2
10 + 8
SOLUTION
- SOUND
- Sets
- 1...Qc1
- 2.Sxd4#
- 2.Sf4#
- 1...Qg1
- 2.Sxd4#
- 2.Sf4#
- 1...Qd2
- 2.Sxd4#
- 2.Sf4#
- 1...Qf2
- 2.Sxd4#
- 2.Sf4#
- 1...Qf4
- 2.Sxd4#
- 2.Sxf4#
- 1...Qg5
- 2.Sxd4#
- 2.Sf4#
- 1...Qa3
- 2.Sxd4#
- 2.Sf4#
- 1...Qb3
- 2.Sxd4#
- 2.Sf4#
- 1...Qc3
- 2.Sxd4#
- 2.Sf4#
- 1...Qd3
- 2.Sxd4#
- 2.Sf4#
- 1...Qxf3
- 2.Sxd4#
- 2.Sf4#
- 1...Qe4
- 2.Sxd4#
- 1...Ra4
- 2.Qxd5#
- 1...Rb4
- 2.Qxd5#
- 1...Rc4
- 2.Qxd5#
- 1...Rde4
- 2.Qxd5#
- 1...Rdf4
- 2.Qxd5#
- 1...Rg1
- 2.Sxd4#
- 1...Rg2
- 2.Sxd4#
- 1...Rg3
- 2.Sxd4#
- 1...Rg5
- 2.Sxd4#
- 1...Rxg6
- 2.Sxd4#
- 1...Qc1
- Tries
- 1.Sf4+?
- 1...Rdxf4
- 2.Qxd5#
- 1...Rgxf4!
- 1...Rdxf4
- 1.Se8?
- threat
- 2.Sg7#
- 1...Rxg6
- 2.Sxd4#
- 2.Sc7#
- 2.Rf6#
- 1...d6
- 2.Qc8#
- 1...Qe5
- 2.Rxe5#
- 1...Kxf5!
- threat
- 1.Bxg4?
- threat
- 2.Sxd4#
- 1...Rxg4
- 2.Qxd5#
- 1...exd6
- 2.Qxd6#
- 1...Rd1
- 2.Sf4#
- 2.Qxe3#
- 1...Rd2
- 2.Sf4#
- 2.Qxe3#
- 1...Rd3
- 2.Sf4#
- 1...Ra4
- 2.Qxd5#
- 1...Rb4
- 2.Qxd5#
- 1...Rc4
- 2.Qxd5#
- 1...Re4
- 2.Qxd5#
- 1...Rf4
- 2.Sxf4#
- 2.Qxd5#
- 1...Qxe2!
- threat
- 1.Qxd4?
- threat
- 2.Qxd5#
- 1...Qxd4
- 2.Sxd4#
- 2.Sf4#
- 1...Qxf3
- 2.Sf4#
- 2.Qe5#
- 1...Rxd4
- 2.Sxd4#
- 1...exd6
- 2.Qf6#
- 1...Qd2
- 2.Sf4#
- 2.Qe5#
- 1...Qb3
- 2.Sf4#
- 2.Qe5#
- 1...Qd3
- 2.Sf4#
- 2.Qe5#
- 1...Qe5
- 2.Qxe5#
- 1...Qe4!
- threat
- 1.Qc8?
- threat
- 2.Qg8#
- 1...Rxg6
- 2.Sxd4#
- 1...exd6!
- threat
- 1.fxg4?
- threat
- 2.Sxd4#
- 1...Rxg4
- 2.Qxd5#
- 1...exd6
- 2.Qxd6#
- 1...Rd1
- 2.Sf4#
- 2.Qxe3#
- 1...Rd2
- 2.Sf4#
- 2.Qxe3#
- 1...Rd3
- 2.Sf4#
- 1...Ra4
- 2.Qxd5#
- 1...Rb4
- 2.Qxd5#
- 1...Rc4
- 2.Qxd5#
- 1...Re4
- 2.Qxd5#
- 1...Rf4
- 2.Sxf4#
- 2.Qxd5#
- 1...Qxe2!
- threat
- 1.Sf4+?
- Keys
- 1.Se4!
- threat
- 2.Re5#
- 1...Kxf5
- 2.Bxg4#
- 1...Qxe4
- 2.Sxd4#
- 1...Rdxe4
- 2.Qxd5#
- 1...Rgxe4
- 2.Rf4#
- 1...Rxg6
- 2.Rf6#
- 1...dxe4
- 2.Qe5#
- 1...d6
- 2.Qc8#
- 1...Qf4
- 2.Sxd4#
- 1...Qg5
- 2.Sxd4#
- threat
- 1.Se4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 6
- REMOVED MATES = 8
- Sets
- Q(a);S_CUTR(c)::S(B),XR(b)
- R(b);N_GUARD::QAB1(E),XP(d)
- R(c);N_GUARD::S(B),XR(b)
- R(c);N_GUARD,XP(H)::S(B),XR(b)
- Tries
- Try
- S(B);CHECK,P_PINQ(a)
- Vars
- R(b);XS(B)::QAB1(E),XP(d)
- Refutation
- R(c);XS(B)
- Try
- S(G);
- Threat
- S(G)
- Vars
- P(g);OGATEB::QAB(E)
- Q(a);N_GUARD::R1(F),XQ(a)
- Refutation
- K(e);P_SPINP(d),P_SPINR(c),S_FLIGHT,XR(F)
- Try
- B(D);XR(c)
- Threat
- S(B),XR(b)
- Vars
- R(b);N_GUARD,XB(D)::QAB1(E),XP(d)
- P(h);OGATE,XS(G)::QAR1(E),XP(h)
- R(b);N_GUARD::S(B)
- R(b);N_GUARD::QAB1(E),XP(d)
- Refutation
- Q(a);P_SPINQ(a),XS(B)
- Try
- Q(E);XR(b)
- Threat
- QAB1(E),XP(d)
- Vars
- R(c);XQ(E)::S(B),XR(c)
- P(h);N_GUARD,XS(G)::QAR1(E)
- Q(a);N_GUARD::QAR1(E),XQ(a)
- Refutation
- Q(a);
- Try
- Q(E);P_PINP(g)
- Threat
- QAB(E)
- Vars
- R(c);N_GUARD,XP(H)::S(B),XR(b)
- Refutation
- P(h);XS(G)
- Try
- P(C);XR(c)
- Threat
- S(B),XR(b)
- Vars
- R(b);N_GUARD,XP(C)::QAB1(E),XP(d)
- P(h);OGATE,XS(G)::QAR1(E),XP(h)
- R(b);N_GUARD::S(B)
- R(b);N_GUARD::QAB1(E),XP(d)
- Refutation
- Q(a);P_SPINQ(a),XS(B)
- Try
- Actual
- S(G);
- Threat
- R1(F)
- Vars
- K(e);OGATEB,P_SPINP(d),P_SPINR(c),S_FLIGHT,XR(F)::B(D),XR(c)
- Q(a);N_GUARD,XS(G)::S(B),XR(b)
- R(b);N_GUARD,XS(G)::QAB1(E),XP(d)
- R(c);OGATEB,XS(G)::B(D)+R(F)
- R(c);XP(H)::B(D)+R(F),DCHECK
- P(d);OGATE,XS(G)::QAR1(E)
- P(g);OGATEB::QAB(E)
- Q(a);N_GUARD::S(B),XR(b)
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