MESON Chess Problem Database

Problem Display
PID: 142595 (8/Q6p/P1PR4/2P1pp2/1p2k3/2P1p1RP/4K2P/6b1 w - - 0 1)

Stepochkin, Anatoly Viktorovich

Phenix, 1990

8/Q6p/P1PR4/2P1pp2/1p2k3/2P1p1RP/4K2P/6b1

#2

10 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...f4
      • 2.Qxh7#
  • Tries
    • 1.Rg4+?
      • 1...f4
        • 2.Qxh7#
      • 1...fxg4!
    • 1.Qb8?
      • threat
        • 2.Qxb4#
      • 1...Kf4
        • 2.Rd4#
      • 1...bxc3
        • 2.Qb4#
      • 1...b3
        • 2.Qb4#
      • 1...f4!
    • 1.Qb7?
      • threat
        • 2.Qxb4#
      • 1...bxc3
        • 2.Qb4#
      • 1...f4
        • 2.Qxh7#
      • 1...b3
        • 2.Qb4#
      • 1...Kf4!
    • 1.Qe7?
      • threat
        • 2.Rd4#
      • 1...Kf4
        • 2.Qh4#
      • 1...f4
        • 2.Qxh7#
      • 1...bxc3!
    • 1.Qxh7?
      • threat
        • 2.Rg4#
      • 1...Kf4
        • 2.Qh4#
      • 1...Bxh2!
  • Keys
    • 1.Qf7!
      • threat
        • 2.Qc4#
      • 1...Kf4
        • 2.Rg4#
      • 1...f4
        • 2.Qxh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(f);OGATEB,SBLOCK::QAB(J),XP(g)
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • P(f);P_SPINP(f)::QAB(J),XP(g)
      • Refutation
        • P(f);XR(D)
    • Try
      • Q(J);
      • Threat
        • QAR(J),XP(c)
      • Vars
        • K(d);P-FLIGHT::R(I)
        • P(c);XP(C)::QAR(J)
        • P(c);::QAR(J)
      • Refutation
        • P(f);
    • Try
      • Q(J);
      • Threat
        • QAR(J),XP(c)
      • Vars
        • P(c);XP(C)::QAR(J)
        • P(f);OGATEB,SBLOCK::QAB(J),XP(g)
        • P(c);::QAR(J)
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • Q(J);P_PINP(e)
      • Threat
        • R1(I)
      • Vars
        • K(d);N_SPINP(e),P-FLIGHT::QAR2(J)
        • P(f);OGATEB,SBLOCK::QAB(J),XP(g)
      • Refutation
        • P(c);XP(C)
    • Try
      • Q(J);P_PINP(f),XP(g)
      • Threat
        • R(D)
      • Vars
        • K(d);N_SPINP(f),P-FLIGHT::QAR2(J)
      • Refutation
        • B(a);XP(B)
  • Actual
    • Q(J);
    • Threat
      • QAR2(J)
    • Vars
      • K(d);P-FLIGHT,P_SPINP(f)::R1(D)
      • P(f);OGATEB,SBLOCK::QAB(J),XP(g)
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