MESON Chess Problem Database

Problem Display
PID: 163810 (8/8/1Np5/2p5/N1P5/kpQp4/3Pp3/4K3 w - - 0 1)

Fomichev, Evgeny Vasilevich

StrateGems, 2014

8/8/1Np5/2p5/N1P5/kpQp4/3Pp3/4K3

#2

6 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Ka2
      • 2.Qb2#
  • Tries
    • 1.Sd5?
      • threat
        • 2.Qa1#
      • 1...Ka2
        • 2.Qb2#
      • 1...Kxa4
        • 2.Qa1#
      • 1...cxd5!
    • 1.Sd7?
      • 1...Ka2
        • 2.Qb2#
      • 1...Kxa4!
    • 1.Sa8?
      • 1...Ka2
        • 2.Qb2#
      • 1...Kxa4!
    • 1.Sc8?
      • 1...Ka2
        • 2.Qb2#
      • 1...Kxa4!
    • 1.Qd4?
      • 1...Ka2
        • 2.Qb2#
      • 1...Kb4
        • 2.Qxc5#
      • 1...b2
        • 2.Qxb2#
      • 1...cxd4!
    • 1.Qa5?
      • 1...b2
        • 2.Sxc5#
      • 1...Ka2!
    • 1.Qf6?
      • 1...Ka2
        • 2.Qb2#
      • 1...b2
        • 2.Qxb2#
      • 1...Kb4!
    • 1.Qg7?
      • 1...Ka2
        • 2.Qb2#
      • 1...b2
        • 2.Qxb2#
      • 1...Kb4!
    • 1.Qh8?
      • 1...Ka2
        • 2.Qb2#
      • 1...b2
        • 2.Qxb2#
      • 1...Kb4!
    • 1.Qc1+?
      • 1...Ka2
        • 2.Sc3#
        • 2.Qb2#
      • 1...b2
        • 2.Qxb2#
      • 1...Kb4!
  • Keys
    • 1.Qe5!
      • 1...Ka2
        • 2.Qb2#
      • 1...Kb4
        • 2.Qxc5#
      • 1...b2
        • 2.Qxb2#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);N_SPINP(c),P-FLIGHT::QAR1(C)
  • Tries
    • Try
      • S(F);
      • Threat
        • QAR2(C)
      • Vars
        • K(b);N_SPINP(c),P-FLIGHT::QAR1(C)
        • K(b);N_SPINP(c),P-FLIGHT,XS(D)::QAR(C)
      • Refutation
        • P(f);XS(F)
    • Try
      • S(F);
      • Vars
        • K(b);N_SPINP(c),P-FLIGHT::QAR1(C)
      • Refutation
        • K(b);N_SPINP(c),P-FLIGHT,XS(D)
    • Try
      • S(F);
      • Vars
        • K(b);N_SPINP(c),P-FLIGHT::QAR1(C)
      • Refutation
        • K(b);N_SPINP(c),P-FLIGHT,XS(D)
    • Try
      • S(F);
      • Vars
        • K(b);N_SPINP(c),P-FLIGHT::QAR1(C)
      • Refutation
        • K(b);N_SPINP(c),P-FLIGHT,XS(D)
    • Try
      • Q(C);N_PINP(c)
      • Vars
        • K(b);P-FLIGHT::QAR1(C)
        • K(b);S_FLIGHT::QAB1(C),XP(e)
        • P(c);::QAB1(C),XP(c)
      • Refutation
        • P(e);XQ(C)
    • Try
      • Q(C);N_PINP(c)
      • Vars
        • P(c);SBLOCK::QAR(C)+S(D),XP(e)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(C);N_PINP(c)
      • Vars
        • K(b);P-FLIGHT::QAR1(C)
        • P(c);::QAB1(C),XP(c)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);N_PINP(c)
      • Vars
        • K(b);P-FLIGHT::QAR1(C)
        • P(c);::QAB1(C),XP(c)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);N_PINP(c)
      • Vars
        • K(b);P-FLIGHT::QAR1(C)
        • P(c);::QAB1(C),XP(c)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);CHECK,N_PINP(c)
      • Vars
        • P(c);P_SPINP(c)::QAB1(C),XP(c)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(C);N_PINP(c)
    • Vars
      • K(b);P-FLIGHT::QAR1(C)
      • K(b);S_FLIGHT::QAB1(C),XP(e)
      • P(c);::QAB1(C),XP(c)
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