MESON Chess Problem Database

Problem Display
PID: 167114 (2RB4/b2p4/2n5/pB1Q4/1kN5/p3P3/P7/nK6 w - - 0 1)

Alekseev, Yuri Mikhailovich

Argunov, Nikolai Dmitrievich

Sachmatija, 2010

2RB4/b2p4/2n5/pB1Q4/1kN5/p3P3/P7/nK6

#2

8 + 7

5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kc3
      • 2.Qd2#
    • 1...Sd4
      • 2.Bxa5#
    • 1...Se5
      • 2.Bxa5#
    • 1...Se7
      • 2.Bxa5#
    • 1...Sb8
      • 2.Bxa5#
  • Tries
    • 1.Sd2?
      • threat
        • 2.Qc4#
      • 1...Kc3
        • 2.Bxa5#
      • 1...Se5!
    • 1.Se5?
      • threat
        • 2.Qc4#
      • 1...Kc3
        • 2.Bxa5#
      • 1...Sxe5!
    • 1.Sb6?
      • threat
        • 2.Qc4#
      • 1...Kc3
        • 2.Qd4#
      • 1...Se5
        • 2.Qc5#
      • 1...a4!
  • Keys
    • 1.Sd6!
      • threat
        • 2.Qc4#
      • 1...Kc3
        • 2.Bxa5#
      • 1...Se5
        • 2.Qd2#

Anticipated by 12347(1978)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 3
  • Sets
    • K(c);S_FLIGHT::QAB1(F)
    • S(e);N_GUARD::B(H),XP(d)
  • Tries
    • Try
      • S(D);
      • Threat
        • QAR1(F)
      • Vars
        • K(c);P_SPINS(e),S_FLIGHT::B(H),XP(d)
      • Refutation
        • S(e);
    • Try
      • S(D);
      • Threat
        • QAR1(F)
      • Vars
        • K(c);P_SPINS(e),S_FLIGHT::B(H),XP(d)
      • Refutation
        • S(e);XS(D)
    • Try
      • S(D);
      • Threat
        • QAR1(F)
      • Vars
        • K(c);P_SPINS(e),S_FLIGHT::QAB1(F)
        • S(e);::QAB1(F)
      • Refutation
        • P(d);
  • Actual
    • S(D);
    • Threat
      • QAR1(F)
    • Vars
      • K(c);P_SPINS(e),S_FLIGHT::B(H),XP(d)
      • S(e);::QAB(F)
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