MESON Chess Problem Database

Problem Display
PID: 187163 (2b5/4p3/nBp3N1/2n2P2/3kPpR1/pQ3K1R/8/8 w - - 0 1)

Chobanyan, Shamil

Zhits, Mikhail I

Suomen Shakki, 1982

2b5/4p3/nBp3N1/2n2P2/3kPpR1/pQ3K1R/8/8

#2

8 + 8

SOLUTION

  • SOUND
  • Tries
    • 1.Ke2?
      • threat
        • 2.Qd3#
      • 1...Kxe4
        • 2.Rxf4#
      • 1...Sb4
        • 2.Qxb4#
      • 1...f3+!
    • 1.Kg2?
      • threat
        • 2.Qd3#
      • 1...Kxe4
        • 2.Rxf4#
      • 1...Sb4
        • 2.Qxb4#
      • 1...f3+!
    • 1.Kxf4?
      • threat
        • 2.Rd3#
        • 2.Qc3#
        • 2.Qd3#
      • 1...Sb4
        • 2.Qc3#
        • 2.Qxb4#
      • 1...e5+!
    • 1.Rxf4?
      • threat
        • 2.e5#
      • 1...Bxf5
        • 2.exf5#
      • 1...e5!
    • 1.Qb2+?
      • 1...Kd3
        • 2.Se5#
      • 1...Kc4
        • 2.Se5#
      • 1...axb2!
  • Keys
    • 1.Kf2!
      • threat
        • 2.Qd3#
      • 1...Kxe4
        • 2.Rxf4#
      • 1...Sb4
        • 2.Qxb4#
      • 1...f3
        • 2.e5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Threat
        • QAR1(A)
      • Vars
        • K(b);N_SPINS(d),OGATEB,P-FLIGHT,P_SPINP(c),XP(D)::R1(E),XP(c)
        • S(e);N_GUARD::QAR2(A),XS(e)
      • Refutation
        • P(c);CHECK
    • Try
      • K(B);S_FLIGHT
      • Threat
        • QAR1(A)
      • Vars
        • K(b);N_SPINS(d),OGATEB,P-FLIGHT,P_SPINP(c),XP(D)::R1(E),XP(c)
        • S(e);N_GUARD::QAR2(A),XS(e)
      • Refutation
        • P(c);CHECK
    • Try
      • K(B);P-FLIGHT,XP(c)
      • Threat
        • DUALS(3)
      • Refutation
        • P(g);CHECK
    • Try
      • R(E);XP(c)
      • Threat
        • R(E)+P(D)
      • Vars
        • B(h);OGATE,XP(F)::R(E)+P(D),XB(h)
      • Refutation
        • P(g);
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);N_SPINS(d),P-FLIGHT::S(H)
      • Refutation
        • P(a);XQ(A)
  • Actual
    • K(B);P-FLIGHT
    • Threat
      • QAR1(A)
    • Vars
      • K(b);N_SPINS(d),OGATEB,P-FLIGHT,P_SPINP(c),XP(D)::R1(E),XP(c)
      • S(e);N_GUARD::QAR2(A),XS(e)
      • P(c);::R(E)+P(D)
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