MESON Chess Problem Database
Problem Display
PID: 99503 (2rq4/pr1QPb2/1b1p4/pPkP4/K1N5/1P1R4/3PN3/8 w - - 0 1)
Groeneveld, Cornelis
Magyar Sakkelet, 1988
#2
10 + 9
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qe8
- 2.Qxd6#
- 1...Qf8
- 2.Qxd6#
- 1...Qg8
- 2.Qxd6#
- 1...Qh8
- 2.Qxd6#
- 1...Rc6
- 2.Qxc6#
- 1...Ra8
- 2.Qc6#
- 1...Rb8
- 2.Qc6#
- 1...Bc7
- 2.Qc6#
- 1...Qe8
- Tries
- 1.Se3?
- threat
- 2.Rc3#
- 1...Bxd5
- 2.Rxd5#
- 1...Bc7
- 2.Qc6#
- 1...Qh8!
- threat
- 1.Sxa5?
- threat
- 2.Sxb7#
- 2.b4#
- 1...Qxd7
- 2.b4#
- 1...Rxd7
- 2.b4#
- 1...Bxd5
- 2.b4#
- 1...Bc7
- 2.Qc6#
- 1...Qc7
- 2.b4#
- 1...Rbc7
- 2.b4#
- 1...Rbb8
- 2.b4#
- 1...Rcc7
- 2.b4#
- 1...Rcb8
- 2.Qc6#
- 2.b4#
- 1...Bxa5!
- threat
- 1.Sxd6?
- threat
- 2.Se4#
- 2.Sxb7#
- 1...Qxe7
- 2.Sxb7#
- 1...Qxd7
- 2.Se4#
- 1...Rxd7
- 2.Se4#
- 1...Bc7
- 2.Qc6#
- 1...Qc7
- 2.Se4#
- 1...Rbc7
- 2.Se4#
- 1...Rbb8
- 2.Se4#
- 1...Rcc7
- 2.Se4#
- 1...Rcb8
- 2.Se4#
- 2.Qc6#
- 1...Bg6
- 2.Sxb7#
- 1...Bxd5!
- threat
- 1.Qg4?
- threat
- 2.Qg1#
- 2.Qd4#
- 1...Qxe7
- 2.Qd4#
- 1...Rxe7
- 2.Qd4#
- 1...Qg8
- 2.Qd4#
- 1...Qh8!
- threat
- 1.exd8Q?
- threat
- 2.Qxd6#
- 1...Rxd8
- 2.Qc6#
- 1...Rc6
- 2.Qxc6#
- 1...Bc7
- 2.Qc6#
- 1...Rxd7!
- threat
- 1.exd8S?
- threat
- 2.Sxb7#
- 2.Qxd6#
- 1...Rxd8
- 2.Qc6#
- 1...Bxd8
- 2.Qxd6#
- 1...Bxd5
- 2.Qxd6#
- 1...Rbc7
- 2.Qxd6#
- 1...Rbb8
- 2.Qxd6#
- 1...Rc6
- 2.Sxb7#
- 2.Qxc6#
- 1...Rcc7
- 2.Qxd6#
- 1...Rcb8
- 2.Qc6#
- 2.Qxd6#
- 1...Bc7
- 2.Sxb7#
- 2.Qc6#
- 1...Rxd7!
- threat
- 1.exd8B?
- threat
- 2.Qxd6#
- 1...Rxd8
- 2.Qc6#
- 1...Rc6
- 2.Qxc6#
- 1...Bc7
- 2.Qc6#
- 1...Rxd7!
- threat
- 1.exd8R?
- threat
- 2.Qxd6#
- 1...Rxd8
- 2.Qc6#
- 1...Rc6
- 2.Qxc6#
- 1...Bc7
- 2.Qc6#
- 1...Rxd7!
- threat
- 1.Se3?
- Keys
- 1.Rc3!
- threat
- 2.Se3#
- 1...Kxd5
- 2.Qf5#
- 1...Bxd5
- 2.d4#
- 1...Qh8
- 2.Qxd6#
- 1...Bc7
- 2.Qc6#
- threat
- 1.Rc3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 6
- Sets
- Q(i);N_GUARD::QAB1(I),XP(d)
- R(h);N_GUARD::QAR1(I),XR(h)
- R(h);N_GUARD::QAR1(I)
- B(c);S_CUTR(h)::QAR1(I)
- Tries
- Try
- S(F);
- Threat
- R(D)
- Vars
- B(g);OGATE,XP(H)::R1(D),XB(g)
- B(c);S_CUTR(h)::QAR1(I)
- Refutation
- Q(i);
- Try
- S(F);XP(a)
- Threat
- DUALS(2)
- Vars
- Q(i);P_PINP(G),XQ(I)::P(C)
- R(f);XQ(I)::P(C)
- B(g);XP(H)::P(C)
- B(c);S_CUTR(h)::QAR1(I)
- Q(i);::P(C)
- R(f);::P(C)
- R(h);::P(C)
- Refutation
- B(c);XS(F)
- Try
- S(F);XP(d)
- Threat
- DUALS(2)
- Vars
- Q(i);XP(J)::S(F),XR(f)
- Q(i);P_PINP(G),XQ(I)::S(F)
- R(f);XQ(I)::S(F)
- B(c);S_CUTR(h)::QAR1(I)
- Q(i);::S(F)
- R(f);::S(F)
- R(h);::S(F)
- B(g);::S(F),XR(f)
- Refutation
- B(g);XP(H)
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- Q(i);XP(J)::QAB1(I)
- R(f);XP(J)::QAB1(I)
- Q(i);::QAB1(I)
- Refutation
- Q(i);
- Try
- P(J);XQ(i)
- Threat
- QAB1(I),XP(d)
- Vars
- R(h);N_GUARD,XQ(J)::QAR1(I)
- R(h);N_GUARD::QAR1(I),XR(h)
- B(c);S_CUTR(h)::QAR1(I)
- Refutation
- R(f);XQ(I)
- Try
- P(J);XQ(i)
- Threat
- DUALS(2)
- Vars
- R(h);N_GUARD,XS(J)::QAR1(I)
- B(c);XS(J)::QAB1(I),XP(d)
- B(g);XP(H)::QAB1(I),XP(d)
- R(f);::QAB1(I),XP(d)
- R(h);::QAB1(I),XP(d)
- Refutation
- R(f);XQ(I)
- Try
- P(J);XQ(i)
- Threat
- QAB1(I),XP(d)
- Vars
- R(h);N_GUARD,XB(J)::QAR1(I)
- R(h);N_GUARD::QAR1(I),XR(h)
- B(c);S_CUTR(h)::QAR1(I)
- Refutation
- R(f);XQ(I)
- Try
- P(J);XQ(i)
- Threat
- QAB1(I),XP(d)
- Vars
- R(h);N_GUARD,XR(J)::QAR1(I)
- R(h);N_GUARD::QAR1(I),XR(h)
- B(c);S_CUTR(h)::QAR1(I)
- Refutation
- R(f);XQ(I)
- Try
- Actual
- R(D);
- Threat
- R(D)+S(F)
- Vars
- K(b);OGATEB,P-FLIGHT,P_SPINP(d),XP(H)::QAR2(I)
- B(g);SBLOCK,XP(H)::P(A)
- Q(i);N_GUARD::QAB1(I),XP(d)
- B(c);S_CUTR(h)::QAR1(I)
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