MESON Chess Problem Database
Problem Display
PID: 219902 (1Nn4r/q3pp1p/r1Q4K/2P1k3/p2p1RP1/5RP1/BpN5/2b2n2 w - - 0 1)
Hjelle, David
Land og Folk, 1971
(First published on Sun Jun 20 1971)
#2
10 + 13
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qxc5
- 2.Sd7#
- 1...Qb6
- 2.Sd7#
- 1...Qd7
- 2.Sxd7#
- 1...Qa8
- 2.Sd7#
- 1...Ra5
- 2.Qe4#
- 2.Qd5#
- 1...Rxc6+
- 2.Sxc6#
- 1...Bxf4+
- 2.gxf4#
- 1...Sd2
- 2.Rf5#
- 1...Se3
- 2.Re4#
- 1...Sb6
- 2.Qe4#
- 1...Sd6
- 2.Qd5#
- 1...e6
- 2.Qe4#
- 1...f6
- 2.Qe4#
- 2.Qd5#
- 1...Qxc5
- Tries
- 1.Kh5?
- threat
- 2.Re4#
- 2.Rf5#
- 2.Qe4#
- 2.Qd5#
- 1...Qxc5
- 2.Sd7#
- 2.Re4#
- 2.Rf5#
- 2.Qxc5#
- 1...Rxc6
- 2.Sxc6#
- 1...Bxf4
- 2.gxf4#
- 1...Qb7
- 2.Re4#
- 2.Rf5#
- 1...Qd7
- 2.Sxd7#
- 2.Re4#
- 2.Qe4#
- 1...Qa8
- 2.Sd7#
- 2.Re4#
- 2.Rf5#
- 1...Rd8
- 2.Re4#
- 2.Rf5#
- 2.Qe4#
- 1...Sd2
- 2.Rf5#
- 2.Qd5#
- 1...Se3
- 2.Re4#
- 2.Qe4#
- 1...Sb6
- 2.Re4#
- 2.Rf5#
- 2.Qe4#
- 1...Sd6
- 2.Qd5#
- 1...e6
- 2.Re4#
- 2.Qe4#
- 1...f5
- 2.Rxf5#
- 1...Sxg3+!
- threat
- 1.Kg7?
- threat
- 2.Re4#
- 2.Rf5#
- 2.Qe4#
- 2.Qd5#
- 1...Qxc5
- 2.Sd7#
- 2.Re4#
- 2.Rf5#
- 2.Qxc5#
- 1...Rxc6
- 2.Sxc6#
- 1...Bxf4
- 2.Qd5#
- 2.gxf4#
- 1...Sxg3
- 2.Qd5#
- 1...Qb7
- 2.Re4#
- 2.Rf5#
- 1...Qd7
- 2.Sxd7#
- 2.Re4#
- 2.Qe4#
- 1...Qa8
- 2.Sd7#
- 2.Re4#
- 2.Rf5#
- 1...Rd8
- 2.Re4#
- 2.Rf5#
- 2.Qe4#
- 1...Sd2
- 2.Rf5#
- 2.Qd5#
- 1...Se3
- 2.Re4#
- 2.Qe4#
- 1...Sb6
- 2.Re4#
- 2.Rf5#
- 2.Qe4#
- 1...Sd6
- 2.Qd5#
- 1...e6
- 2.Re4#
- 2.Qe4#
- 1...f5
- 2.Rxf5#
- 2.Qd5#
- 1...Rg8+!
- threat
- 1.Se3?
- threat
- 2.Sc4#
- 2.Re4#
- 2.Rf5#
- 1...Rxc6+
- 2.Sxc6#
- 1...Qxc5
- 2.Sd7#
- 2.Re4#
- 2.Rf5#
- 1...Sxe3
- 2.Re4#
- 1...Sxg3
- 2.Sc4#
- 1...dxe3
- 2.Re4#
- 1...b1Q
- 2.Sc4#
- 1...b1B
- 2.Sc4#
- 1...Qd7
- 2.Sc4#
- 2.Sxd7#
- 2.Re4#
- 1...Sd2
- 2.Rf5#
- 1...Sb6
- 2.Re4#
- 2.Rf5#
- 2.Qe4#
- 1...Sd6
- 2.Qd5#
- 1...d3
- 2.Sc4#
- 2.Re4#
- 1...e6
- 2.Sc4#
- 2.Re4#
- 2.Qe4#
- 1...f5
- 2.Sc4#
- 2.Rxf5#
- 1...Bxe3!
- threat
- 1.Re3+?
- 1...Sxe3
- 2.Re4#
- 1...dxe3
- 2.Re4#
- 2.Rf5#
- 1...Bxe3!
- 1...Sxe3
- 1.Kh5?
- Keys
- 1.Sa3!
- threat
- 2.Sc4#
- 1...Rxc6+
- 2.Sxc6#
- 1...Bxf4+
- 2.gxf4#
- 1...Qxc5
- 2.Sd7#
- 1...Sd2
- 2.Rf5#
- 1...Se3
- 2.Re4#
- 1...Sb6
- 2.Qe4#
- 1...Sd6
- 2.Qd5#
- threat
- 1.Sa3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 4
- Sets
- Q(h);N_GUARD,XP(G)::S(J)
- Q(h);N_GUARD::S(J)
- Q(h);N_GUARD::S(J),XQ(h)
- R(g);CHECK,XQ(H)::S(J),XR(g)
- B(a);CHECK,OGATE,XR(E)::P(D),XB(a)
- S(b);N_PINR(E)::R1(E)
- S(l);N_PINQ(H)::QAR1(H)
- P(i);N_PINQ(H)::QAR1(H)
- Tries
- Try
- K(I);N_SPINQ(H),N_SPINR(E),P-FLIGHT
- Threat
- DUALS(4)
- Vars
- R(g);XQ(H)::S(J),XR(g)
- B(a);OGATE,XR(E)::P(D),XB(a)
- S(l);::QAR1(H)
- P(j);::R1(E),XP(j)
- Refutation
- S(b);CHECK,XP(D)
- Try
- K(I);N_SPINQ(H),N_SPINR(E),S_FLIGHT
- Threat
- DUALS(4)
- Vars
- R(g);XQ(H)::S(J),XR(g)
- S(b);XP(D)::QAR1(H)
- S(l);::QAR1(H)
- Refutation
- R(m);CHECK
- Try
- S(B);N_SPINR(E)
- Threat
- DUALS(3)
- Vars
- R(g);CHECK,XQ(H)::S(J),XR(g)
- S(b);XS(B)::R1(E)
- S(b);XP(D)::S(B)
- P(e);XS(B)::R1(E)
- P(c);::S(B)
- S(b);::R1(E)
- S(l);N_PINQ(H)::QAR1(H)
- Refutation
- B(a);P_PINR(E),XS(B)
- Try
- R(C);CHECK,N_SPINR(E)
- Vars
- S(b);XR(C)::R1(E)
- Refutation
- B(a);P_PINR(E),XR(C)
- Try
- Actual
- S(B);
- Threat
- S(B)
- Vars
- R(g);CHECK,XQ(H)::S(J),XR(g)
- B(a);CHECK,OGATE,XR(E)::P(D),XB(a)
- Q(h);N_GUARD,XP(G)::S(J)
- S(b);N_PINR(E)::R1(E)
- S(l);N_PINQ(H)::QAR1(H)
Developed and maintained by Brian Stephenson.
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