MESON Chess Problem Database
Problem Display
PID: 77426 (4N3/8/2R1nK2/1P1kpQ2/7R/3Prq2/7B/7B w - - 0 1)
Holladay, Edgar Dinwiddie
Chess Life, 1990
#2
9 + 5
SOLUTION
- SOUND
- Sets
- 1...Qxh1
- 2.Qxe6#
- 1...Qg2
- 2.Qxe6#
- 1...Qe4
- 2.Qxe5#
- 1...Sd4
- 2.Sc7#
- 1...Sf4
- 2.Qd7#
- 1...Sc5
- 2.Sc7#
- 2.Rd6#
- 1...Sg5
- 2.Sc7#
- 1...Sc7
- 2.Sxc7#
- 1...Sg7
- 2.Sc7#
- 1...Sd8
- 2.Sc7#
- 1...Sf8
- 2.Sc7#
- 1...Qxh1
- Tries
- 1.Ke7?
- threat
- 2.Sf6#
- 2.Qxe6#
- 1...Qe4
- 2.Qxe5#
- 1...Sf4
- 2.Qd7#
- 1...Sd4
- 2.Sf6#
- 2.Sc7#
- 2.Qd7#
- 1...Sc5
- 2.Sf6#
- 2.Sc7#
- 2.Rd6#
- 1...Sg5
- 2.Sf6#
- 2.Sc7#
- 2.Qd7#
- 1...Sc7
- 2.Sf6#
- 2.Sxc7#
- 2.Qd7#
- 1...Sg7
- 2.Sf6#
- 2.Sc7#
- 2.Qd7#
- 1...Sd8
- 2.Sf6#
- 2.Sc7#
- 2.Qd7#
- 1...Sf8
- 2.Sf6#
- 2.Sc7#
- 1...Re4!
- threat
- 1.Bxf3+?
- 1...Re4
- 2.Qxe4#
- 2.Qxe5#
- 1...Rxf3!
- 1...Re4
- 1.Rd4+?
- 1...Sxd4
- 2.Sc7#
- 1...Kxd4!
- 1...Sxd4
- 1.Rf4?
- threat
- 2.Qxe6#
- 1...Sxf4
- 2.Qd7#
- 1...Qe4
- 2.Qxe5#
- 1...Sd4
- 2.Sc7#
- 2.Qd7#
- 1...Sc5
- 2.Sc7#
- 2.Rd6#
- 1...Sg5
- 2.Sc7#
- 2.Qd7#
- 1...Sc7
- 2.Sxc7#
- 2.Qd7#
- 1...Sg7
- 2.Sc7#
- 2.Qd7#
- 1...Sd8
- 2.Sc7#
- 2.Qd7#
- 1...Sf8
- 2.Sc7#
- 1...Re4!
- threat
- 1.Ke7?
- Keys
- 1.Bg1!
- 1...Qxh1
- 2.Qxe6#
- 1...Rxd3
- 2.Rd6#
- 1...Qe4
- 2.Qxe5#
- 1...Sf4
- 2.Qd7#
- 1...Qg2
- 2.Qxe6#
- 1...Re1
- 2.Rd6#
- 1...Re2
- 2.Rd6#
- 1...Re4
- 2.Rd6#
- 1...Sd4
- 2.Sc7#
- 1...Sc5
- 2.Sc7#
- 2.Rd6#
- 1...Sg5
- 2.Sc7#
- 1...Sc7
- 2.Sxc7#
- 1...Sg7
- 2.Sc7#
- 1...Sd8
- 2.Sc7#
- 1...Sf8
- 2.Sc7#
- 1...Qxh1
- 1.Bg1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- Q(b);N_PINQ(F),N_SPINQ(b),XB(A)::QAB1(F),XS(e)
- Q(b);N_PINQ(F)::QAB1(F),XS(e)
- Q(b);N_PINQ(F)::QAR1(F),XP(d)
- S(e);N_GUARD::S(I)
- S(e);N_PINQ(F)::QAR2(F)
- S(e);N_GUARD::S(I),XS(e)
- Tries
- Try
- K(H);N_SPINQ(F),S_FLIGHT
- Threat
- DUALS(2)
- Vars
- Q(b);S_CUTR(a)::QAR1(F),XP(d)
- S(e);OGATE::QAR2(F)
- Refutation
- R(a);N_SPINQ(b)
- Try
- B(A);CHECK,N_SPINQ(F),XQ(b)
- Refutation
- R(a);P_PINQ(F),XB(A)
- Try
- R(D);CHECK
- Vars
- S(e);SBLOCK,XR(D)::S(I)
- Refutation
- K(c);N_SPINP(d),N_SPINQ(b),P-FLIGHT,XR(D)
- Try
- R(D);N_SPINQ(F)
- Threat
- QAB1(F),XS(e)
- Vars
- S(e);OGATE,XR(D)::QAR2(F)
- Q(b);S_CUTR(a)::QAR1(F),XP(d)
- S(e);N_GUARD::S(I)
- Refutation
- R(a);N_SPINQ(b)
- Try
- Actual
- B(B);
- Vars
- Q(b);N_PINQ(F),N_SPINQ(b),XB(A)::QAB1(F),XS(e)
- R(a);XP(C)::R1(G)
- Q(b);N_PINQ(F)::QAR1(F),XP(d)
- S(e);N_PINQ(F)::QAR2(F)
- Q(b);N_PINQ(F)::QAB1(F),XS(e)
- R(a);::R1(G)
- R(a);N_SPINQ(b)::R1(G)
- S(e);N_GUARD::S(I)
- S(e);N_GUARD::S(I),XS(e)
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