MESON Chess Problem Database

Problem Display
PID: 108018 (8/b4r2/7p/8/n3p2N/pp2kPP1/3R4/Q3K3 w - - 0 1)

Dyner, A

Gazeta Czestochowska, 1979

8/b4r2/7p/8/n3p2N/pp2kPP1/3R4/Q3K3

#2

6 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf3
      • 2.Sg2#
    • 1...Bd4
      • 2.Qxd4#
    • 1...Bb8
      • 2.Qd4#
    • 1...Sc3
      • 2.Qxc3#
    • 1...Sc5
      • 2.Qd4#
    • 1...Sb6
      • 2.Qc3#
      • 2.Qd4#
    • 1...exf3
      • 2.Qe5#
  • Tries
    • 1.Sf5+?
      • 1...Kxf3
        • 2.Qd1#
      • 1...Rxf5!
    • 1.Rd3+?
      • 1...exd3
        • 2.Qe5#
      • 1...Kxd3!
    • 1.Qf6?
      • threat
        • 2.Sg2#
      • 1...exf3
        • 2.Qe5#
        • 2.Qe6#
      • 1...Rxf6!
    • 1.Qd1?
      • threat
        • 2.Sg2#
        • 2.Re2#
        • 2.Qe2#
      • 1...Sc3
        • 2.Sg2#
      • 1...exf3!
  • Keys
    • 1.Qe5!
      • threat
        • 2.Qxe4#
      • 1...Rxf3
        • 2.Sg2#
      • 1...Rf4
        • 2.Qxf4#
      • 1...Re7
        • 2.Qf4#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Sc5
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • R(h);SBLOCK,XP(D)::S(F)
    • B(g);N_GUARD::QAB1(A),XB(g)
    • B(g);N_GUARD::QAB1(A)
    • S(d);N_GUARD::QAR2(A),XS(d)
    • S(d);S_CUTB(g)::QAB1(A)
    • P(e);OGATEB,XP(D)::QAR2(A)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(c);P-FLIGHT,XP(D)::QAB(A)
      • Refutation
        • R(h);XS(F)
    • Try
      • R(C);CHECK
      • Vars
        • P(e);SBLOCK,XR(C)::QAR2(A)
      • Refutation
        • K(c);P-FLIGHT,XR(C)
    • Try
      • Q(A);
      • Threat
        • S(F)
      • Refutation
        • R(h);XQ(A)
    • Try
      • Q(A);
      • Threat
        • DUALS(3)
      • Vars
        • S(d);::S(F)
      • Refutation
        • P(e);XP(D)
  • Actual
    • Q(A);P_PINP(e)
    • Threat
      • QAR1(A),XP(e)
    • Vars
      • R(h);SBLOCK,XP(D)::S(F)
      • R(h);N_GUARD::QAB1(A),XR(h)
      • R(h);N_GUARD::QAB1(A)
      • S(d);N_GUARD::QAR2(A),XS(d)
      • S(d);S_CUTB(g)::QAB1(A)
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