MESON Chess Problem Database
Problem Display
PID: 87627 (6Q1/1p1K1p2/1p1Bp3/1PNk4/p1rnp3/Nr6/B5n1/3R4 w - - 0 1)
Lynn, David P
The Problemist, 1993
#2
8 + 11
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rb1
- 2.Bxc4#
- 1...Rb2
- 2.Bxc4#
- 1...Rd3
- 2.Bxc4#
- 1...Re3
- 2.Bxc4#
- 1...Rf3
- 2.Bxc4#
- 1...Rg3
- 2.Bxc4#
- 1...Rh3
- 2.Bxc4#
- 1...Rxb5
- 2.Bxc4#
- 1...e3
- 2.Qxg2#
- 1...e5
- 2.Qxf7#
- 1...f5
- 2.Qxe6#
- 1...f6
- 2.Qxe6#
- 1...Rb1
- Tries
- 1.Sxc4?
- threat
- 2.Sxb6#
- 1...bxc5
- 2.Sb6#
- 1...Kxc4!
- threat
- 1.Qxf7?
- threat
- 2.Qxe6#
- 1...Rd3
- 2.Bxc4#
- 1...Sf4!
- threat
- 1.Qg5+?
- 1...e5
- 2.Qxe5#
- 1...f5!
- 1...e5
- 1.Qg7?
- threat
- 2.Qe5#
- 1...e5
- 2.Qxe5#
- 2.Qxf7#
- 1...f6!
- threat
- 1.Qa8?
- threat
- 2.Qxb7#
- 1...Rd3
- 2.Bxc4#
- 1...Rxc5!
- threat
- 1.Qb8?
- threat
- 2.Qxb7#
- 1...Rd3
- 2.Bxc4#
- 1...Rxc5!
- threat
- 1.Qc8?
- threat
- 2.Qxb7#
- 1...Rd3
- 2.Bxc4#
- 1...Rxc5!
- threat
- 1.Qh8?
- threat
- 2.Qe5#
- 1...e5
- 2.Qxe5#
- 1...f6!
- threat
- 1.Sxc4?
- Keys
- 1.Sxe6!
- 1...Rc7+
- 2.Sxc7#
- 1...Rxa3
- 2.Sc7#
- 2.Rxd4#
- 1...Rxb5
- 2.Sc7#
- 2.Bxc4#
- 2.Rxd4#
- 1...fxe6
- 2.Qxe6#
- 1...e3
- 2.Qxg2#
- 1...Rb1
- 2.Sc7#
- 2.Bxc4#
- 2.Rxd4#
- 1...Rb2
- 2.Sc7#
- 2.Bxc4#
- 2.Rxd4#
- 1...Rbc3
- 2.Sc7#
- 2.Rxd4#
- 1...Rd3
- 2.Sc7#
- 2.Bxc4#
- 1...Re3
- 2.Sc7#
- 2.Bxc4#
- 2.Rxd4#
- 1...Rf3
- 2.Sc7#
- 2.Bxc4#
- 2.Rxd4#
- 1...Rg3
- 2.Sc7#
- 2.Bxc4#
- 2.Rxd4#
- 1...Rh3
- 2.Sc7#
- 2.Bxc4#
- 2.Rxd4#
- 1...Rbb4
- 2.Sc7#
- 2.Rxd4#
- 1...Rc1
- 2.Rxd4#
- 1...Rc2
- 2.Rxd4#
- 1...Rcc3
- 2.Rxd4#
- 1...Rcb4
- 2.Sc7#
- 1...Rc5
- 2.Rxd4#
- 1...Rc6
- 2.Rxd4#
- 1...Rc8
- 2.Rxd4#
- 1...Se1
- 2.Sf4#
- 1...Se3
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sh4
- 2.Sf4#
- 1...f5
- 2.Sxd4#
- 2.Sf4#
- 2.Sc5#
- 2.Sg5#
- 2.Sc7#
- 2.Sg7#
- 2.Sd8#
- 2.Sf8#
- 1...f6
- 2.Sxd4#
- 2.Sf4#
- 2.Sc5#
- 2.Sg5#
- 2.Sc7#
- 2.Sg7#
- 2.Sd8#
- 2.Sf8#
- 1...Rc7+
- 1.Sxe6!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 13
- REMOVED MATES = 11
- Sets
- R(b);OGATE,P_SPINR(d)::B(B),XR(d)
- R(b);N_SPINS(e),OGATE,P_SPINR(d)::B(B),XR(d)
- R(b);OGATE,P_SPINR(d),XP(D)::B(B),XR(d)
- P(f);OGATEB::QAB(H),XS(a)
- P(i);OGATEB,P_SPINP(k)::QAB(H),XP(k)
- P(k);OGATE,P_SPINP(i)::QAB1(H),XP(i)
- Tries
- Try
- S(C);XR(d)
- Threat
- S(C),XP(h)
- Vars
- P(h);XS(E)::S(C)
- Refutation
- K(g);N_SPINS(e),P_SPINR(b),S_FLIGHT,XS(C)
- Try
- Q(H);P_PINP(i),XP(k)
- Threat
- QAB1(H),XP(i)
- Vars
- R(b);N_SPINS(e),OGATE,P_SPINR(d)::B(B),XR(d)
- Refutation
- S(a);
- Try
- Q(H);CHECK
- Vars
- P(i);P_SPINP(i)::QAR1(H),XP(i)
- Refutation
- P(k);P_SPINP(k)
- Try
- Q(H);
- Threat
- QAR1(H)
- Refutation
- P(k);
- Try
- Q(H);P_PINP(j)
- Threat
- QAB(H),XP(j)
- Vars
- R(b);N_SPINS(e),OGATE,P_SPINR(d)::B(B),XR(d)
- Refutation
- R(d);P_SPINR(b),XS(E)
- Try
- Q(H);
- Threat
- QAB(H),XP(j)
- Vars
- R(b);N_SPINS(e),OGATE,P_SPINR(d)::B(B),XR(d)
- Refutation
- R(d);P_SPINR(b),XS(E)
- Try
- Q(H);
- Threat
- QAB(H),XP(j)
- Vars
- R(b);N_SPINS(e),OGATE,P_SPINR(d)::B(B),XR(d)
- Refutation
- R(d);P_SPINR(b),XS(E)
- Try
- Q(H);
- Threat
- QAR1(H)
- Vars
- P(i);::QAR1(H),XP(i)
- Refutation
- P(k);
- Try
- Actual
- S(E);XP(i)
- Vars
- R(d);CHECK,N_GUARD,P_SPINR(b)::S(E),XR(d)
- P(k);OGATE,P_SPINP(k),XS(E)::QAB1(H),XP(k)
- P(f);OGATEB::QAB(H),XS(a)
- R(d);N_GUARD,P_SPINR(b)::R1(A),XS(e)
- R(d);N_GUARD,P_SPINR(b)::S(E)
- S(a);N_GUARD::S(E)
- S(a);N_GUARD::S(E),XS(a)
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