MESON Chess Problem Database
Problem Display
PID: 108260 (2N4b/2p5/5p2/pPk2Nn1/P1r1nRK1/PP3Bp1/2Q2p2/2rR4 w - - 0 1)
du Gres, Jacques
Canadian Chess Chat, 1980
#2
11 + 11
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Qxc4#
- 1...Rb1
- 2.Qxc4#
- 1...Rxd1
- 2.Qxc4#
- 1...Sc3
- 2.Rxc4#
- 1...Sd6
- 2.Rd5#
- 1...Ra1
- Tries
- 1.Se3?
- threat
- 2.Rd5#
- 2.Rf5#
- 1...Rxd1
- 2.Qxc4#
- 1...Sxf3
- 2.Rd5#
- 1...Sd2
- 2.Qf5#
- 1...Sc3
- 2.Rxc4#
- 1...Sd6
- 2.Rd5#
- 1...Sf7
- 2.Rd5#
- 1...c6
- 2.Rf5#
- 1...f5+!
- threat
- 1.Sxg3?
- threat
- 2.Rf5#
- 1...Rxd1
- 2.Qxc4#
- 1...Sxg3
- 2.Rd5#
- 2.Rxc4#
- 1...Sxf3
- 2.Sxe4#
- 1...Sd2
- 2.Qf5#
- 1...Sc3
- 2.Rxc4#
- 1...Sd6
- 2.Rd5#
- 1...Sf7
- 2.Sxe4#
- 1...f5+!
- threat
- 1.Sfe7?
- threat
- 2.Rd5#
- 2.Rf5#
- 1...Rxd1
- 2.Qxc4#
- 1...Sxf3
- 2.Rd5#
- 1...Sd2
- 2.Qf5#
- 1...Sc3
- 2.Rxc4#
- 1...Sd6
- 2.Rd5#
- 1...Sf7
- 2.Rd5#
- 1...c6
- 2.Rf5#
- 1...f5+!
- threat
- 1.Qd3?
- threat
- 2.Qd5#
- 1...Rxd1
- 2.Qxc4#
- 1...Rd4
- 2.Qxd4#
- 1...Sc3
- 2.Rxc4#
- 2.Qxc4#
- 1...c6!
- threat
- 1.Se3?
- Keys
- 1.Sg7!
- threat
- 2.Rf5#
- 1...f5+
- 2.Rxf5#
- 1...Rxd1
- 2.Qxc4#
- 1...Sxf3
- 2.Se6#
- 1...Sd2
- 2.Qf5#
- 1...Sc3
- 2.Rxc4#
- 1...Sd6
- 2.Rd5#
- 1...Sf7
- 2.Se6#
- threat
- 1.Sg7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 2
- Sets
- R(a);N_GUARD::QAR1(B),XR(d)
- R(a);N_GUARD,XR(A)::QAR1(B),XR(d)
- S(e);N_SPINR(d),OGATE,P_PINR(G)::R1(G),XR(d)
- S(e);P_PINR(G)::R1(A)
- Tries
- Try
- S(J);
- Threat
- DUALS(2)
- Vars
- R(a);N_GUARD,XR(A)::QAR1(B),XR(d)
- S(h);XB(E)::R1(A)
- S(e);OGATE,P_PINR(G)::QAR(B)
- S(e);N_SPINR(d),OGATE,P_PINR(G)::R1(G),XR(d)
- S(e);P_PINR(G)::R1(A)
- S(h);::R1(A)
- P(j);::R(G)
- Refutation
- P(i);CHECK
- Try
- S(J);XP(c)
- Threat
- R(G)
- Vars
- R(a);N_GUARD,XR(A)::QAR1(B),XR(d)
- S(h);N_GUARD,XB(E)::S(J),XS(e)
- S(e);OGATE,P_PINR(G)::QAR(B)
- S(e);N_SPINR(d),OGATE,P_PINR(G)::R1(G),XR(d)
- S(e);P_PINR(G)::R1(A)
- S(h);N_GUARD::S(J),XS(e)
- Refutation
- P(i);CHECK
- Try
- S(J);
- Threat
- DUALS(2)
- Vars
- R(a);N_GUARD,XR(A)::QAR1(B),XR(d)
- S(h);XB(E)::R1(A)
- S(e);OGATE,P_PINR(G)::QAR(B)
- S(e);N_SPINR(d),OGATE,P_PINR(G)::R1(G),XR(d)
- S(e);P_PINR(G)::R1(A)
- S(h);::R1(A)
- P(j);::R(G)
- Refutation
- P(i);CHECK
- Try
- Q(B);N_PINR(d)
- Threat
- QAR1(B)
- Vars
- R(a);N_GUARD,XR(A)::QAR1(B),XR(d)
- R(d);N_GUARD::QAB1(B),XR(d)
- Refutation
- P(j);
- Try
- Actual
- S(J);
- Threat
- R(G)
- Vars
- P(i);CHECK::R(G),XP(i)
- R(a);N_GUARD,XR(A)::QAR1(B),XR(d)
- S(h);N_GUARD,XB(E)::S(J)
- S(e);OGATE,P_PINR(G)::QAR(B)
- S(e);N_SPINR(d),OGATE,P_PINR(G)::R1(G),XR(d)
- S(e);P_PINR(G)::R1(A)
- S(h);N_GUARD::S(J)
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