MESON Chess Problem Database
Problem Display
PID: 69691 (8/K2b4/3p2Q1/1pk2n1r/1N6/PP1R3p/4pb2/B2rN3 w - - 0 1)
Groeneveld, Cornelis
2nd Prize, Problem Observer, 2006
#2
8 + 10
| 136 | Problem Observer | 2007 |
SOLUTION
- SOUND
- Sets
- 1...Rxa1
- 2.Rd5#
- 1...Rb1
- 2.Rd5#
- 1...Rc1
- 2.Rd5#
- 1...Rxe1
- 2.Rd5#
- 1...Rxd3
- 2.Sexd3#
- 1...Bc6
- 2.Sa6#
- 1...Se3
- 2.Bd4#
- 2.Qxd6#
- 1...Sg3
- 2.Qxd6#
- 1...Sd4
- 2.Rc3#
- 1...Sh4
- 2.Qxd6#
- 1...Sh6
- 2.Qxd6#
- 1...Se7
- 2.Qxd6#
- 1...Sg7
- 2.Qxd6#
- 1...d5
- 2.Sa6#
- 2.Qb6#
- 1...Rxa1
- Tries
- 1.Bd4+?
- 1...Sxd4
- 2.Rc3#
- 1...Bxd4!
- 1...Sxd4
- 1.Qg2?
- threat
- 2.Sa6#
- 2.Qd5#
- 1...Rxd3
- 2.Sexd3#
- 2.Sbxd3#
- 2.Sa6#
- 1...d5
- 2.Qxd5#
- 1...Bc6
- 2.Sa6#
- 2.Qxc6#
- 1...Be6
- 2.Sa6#
- 2.Qc6#
- 1...Bc8
- 2.Qd5#
- 2.Qc6#
- 1...Se3
- 2.Sa6#
- 2.Bd4#
- 1...Sg3
- 2.Sa6#
- 2.Qxf2#
- 1...Sd4
- 2.Sa6#
- 2.Rc3#
- 1...Sh4
- 2.Sa6#
- 2.Qxf2#
- 1...Sh6
- 2.Sa6#
- 2.Qxf2#
- 1...Se7
- 2.Sa6#
- 2.Qxf2#
- 1...Sg7
- 2.Sa6#
- 2.Qxf2#
- 1...hxg2!
- threat
- 1.Qe6?
- threat
- 2.Qd5#
- 1...Rxd3
- 2.Sexd3#
- 1...Bc6
- 2.Sa6#
- 1...Se3
- 2.Bd4#
- 2.Qxd6#
- 1...Sg3
- 2.Qxd6#
- 1...Sd4
- 2.Rc3#
- 1...Sh4
- 2.Qxd6#
- 1...Sh6
- 2.Qxd6#
- 1...Se7
- 2.Qxd6#
- 1...Sg7
- 2.Qxd6#
- 1...d5
- 2.Sa6#
- 2.Qxd5#
- 2.Qb6#
- 1...Bxe6!
- threat
- 1.Bd4+?
- Keys
- 1.Qf7!
- threat
- 2.Qd5#
- 1...Rxd3
- 2.Sexd3#
- 1...d5
- 2.Qxd5#
- 1...Bc6
- 2.Sa6#
- 1...Be6
- 2.Qc7#
- 1...Se3
- 2.Bd4#
- 1...Sg3
- 2.Qxf2#
- 1...Sd4
- 2.Rc3#
- 1...Sh4
- 2.Qxf2#
- 1...Sh6
- 2.Qxf2#
- 1...Se7
- 2.Qxf2#
- 1...Sg7
- 2.Qxf2#
- threat
- 1.Qf7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 5
- ADDED MATES = 3
- REMOVED MATES = 4
- Sets
- R(a);N_GUARD,P_PINP(C),XB(A)::R1(E)
- R(a);N_GUARD::R1(E)
- R(a);N_GUARD,XS(B)::R1(E)
- R(a);XR(E)::S(B),XR(a)
- B(j);SBLOCK::S(F)
- S(g);N_GUARD::QAB1(G),XP(i)
- S(g);SBLOCK::R(E)
- Tries
- Try
- B(A);CHECK
- Vars
- S(g);SBLOCK,XB(A)::R(E)
- Refutation
- B(c);XB(A)
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- P(i);::QAR1(G),XP(i)
- Refutation
- P(d);XQ(G)
- Try
- Q(G);
- Threat
- QAR1(G)
- Vars
- R(a);XR(E)::S(B),XR(a)
- B(j);SBLOCK::S(F)
- S(g);N_GUARD::QAB1(G),XP(i)
- S(g);SBLOCK::R(E)
- Refutation
- B(j);XQ(G)
- Try
- Actual
- Q(G);
- Threat
- QAR1(G)
- Vars
- R(a);XR(E)::S(B),XR(a)
- P(i);::QAR1(G),XP(i)
- B(j);SBLOCK::S(F)
- B(j);OGATE::QAR2(G)
- S(g);N_GUARD,S_CUTB(c)::B(A)
- S(g);OGATE::QAB(G),XB(c)
- S(g);SBLOCK::R(E)
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