MESON Chess Problem Database

Problem Display
PID: 255365 (2K1R3/2Np2r1/pp1k4/P3p3/1P2p3/3pB2q/5Q2/7B w - - 0 1)

Derevchuk, Oleksandr Andrinovich

Novitski, Petr Adrinovich

Problemist Ukraini, 2021

2K1R3/2Np2r1/pp1k4/P3p3/1P2p3/3pB2q/5Q2/7B

#2

8 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qg2
      • 2.Qf6#
    • 1...Qxh1
      • 2.Qf6#
    • 1...Qh2
      • 2.Qf6#
    • 1...Qxe3
      • 2.Qf6#
    • 1...Qg3
      • 2.Qf6#
    • 1...Qh5
      • 2.Qf6#
    • 1...Qh7
      • 2.Qf6#
    • 1...Qh8
      • 2.Qf6#
    • 1...Rg4
      • 2.Qf6#
  • Tries
    • 1.Bc1?
      • threat
        • 2.Qxb6#
      • 1...Kc6
        • 2.Qxb6#
      • 1...bxa5
        • 2.Qc5#
        • 2.Qb6#
      • 1...Qe3
        • 2.Qf6#
      • 1...b5
        • 2.Qc5#
        • 2.Qb6#
      • 1...e3!
    • 1.Bd2?
      • threat
        • 2.Qxb6#
      • 1...Kc6
        • 2.Qxb6#
      • 1...bxa5
        • 2.Qc5#
        • 2.Qb6#
      • 1...Qe3
        • 2.Qf6#
      • 1...b5
        • 2.Qc5#
        • 2.Qb6#
      • 1...e3!
    • 1.Bf4?
      • threat
        • 2.Qxb6#
      • 1...Kc6
        • 2.Qxb6#
      • 1...bxa5
        • 2.Qc5#
        • 2.Qb6#
      • 1...e3
        • 2.Bxe5#
      • 1...b5
        • 2.Qc5#
        • 2.Qb6#
      • 1...Qe3!
    • 1.Bc5+?
      • 1...bxc5
        • 2.Qxc5#
      • 1...Kc6!
    • 1.Bg5?
      • threat
        • 2.Qxb6#
      • 1...Kc6
        • 2.Qxb6#
      • 1...bxa5
        • 2.Qc5#
        • 2.Qb6#
      • 1...Qe3
        • 2.Qf6#
      • 1...b5
        • 2.Qc5#
        • 2.Qb6#
      • 1...e3!
    • 1.Bh6?
      • threat
        • 2.Qxb6#
      • 1...Kc6
        • 2.Qxb6#
      • 1...bxa5
        • 2.Qc5#
        • 2.Qb6#
      • 1...Qe3
        • 2.Qf6#
      • 1...b5
        • 2.Qc5#
        • 2.Qb6#
      • 1...e3!
    • 1.Qa2?
      • threat
        • 2.Qd5#
      • 1...Kc6
        • 2.Qd5#
      • 1...Qe6!
  • Keys
    • 1.Bxb6!
      • threat
        • 2.Qc5#
      • 1...Kc6
        • 2.Qc5#
      • 1...e3
        • 2.Bc5#
      • 1...Qe3
        • 2.Qf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • Q(b);N_GUARD::QAR2(B)
    • Q(b);N_GUARD,XB(A)::QAR2(B)
    • Q(b);N_GUARD,XB(C)::QAR2(B)
    • Q(b);N_GUARD,P_PINR(H)::QAR2(B)
    • R(i);S_CUTQ(b)::QAR2(B)
  • Tries
    • Try
      • B(C);
      • Threat
        • QAR2(B),XP(f)
      • Vars
        • K(g);P-FLIGHT,P_SPINP(c)::QAR1(B),XP(f)
        • Q(b);N_GUARD::QAR2(B)
      • Refutation
        • P(c);
    • Try
      • B(C);
      • Threat
        • QAR2(B),XP(f)
      • Vars
        • K(g);P-FLIGHT,P_SPINP(c)::QAR1(B),XP(f)
        • Q(b);N_GUARD::QAR2(B)
      • Refutation
        • P(c);
    • Try
      • B(C);P_PINP(d)
      • Threat
        • QAR2(B),XP(f)
      • Vars
        • K(g);N_SPINP(d),P-FLIGHT,P_SPINP(c)::QAR1(B),XP(f)
        • P(c);::B(C),XP(d)
      • Refutation
        • Q(b);
    • Try
      • B(C);CHECK
      • Vars
        • P(f);OGATE,XB(C)::QAB1(B),XP(f)
      • Refutation
        • K(g);P-FLIGHT,P_SPINP(c)
    • Try
      • B(C);
      • Threat
        • QAR2(B),XP(f)
      • Vars
        • K(g);P-FLIGHT,P_SPINP(c)::QAR1(B),XP(f)
        • Q(b);N_GUARD::QAR2(B)
      • Refutation
        • P(c);
    • Try
      • B(C);
      • Threat
        • QAR2(B),XP(f)
      • Vars
        • K(g);P-FLIGHT,P_SPINP(c)::QAR1(B),XP(f)
        • Q(b);N_GUARD::QAR2(B)
      • Refutation
        • P(c);
    • Try
      • Q(B);
      • Threat
        • QAR1(B)
      • Vars
        • K(g);P-FLIGHT,P_SPINP(c)::QAB1(B)
      • Refutation
        • Q(b);
  • Actual
    • B(C);XP(f)
    • Threat
      • QAB1(B)
    • Vars
      • K(g);P-FLIGHT,P_SPINP(c)::QAR1(B)
      • P(c);::B(C)
      • Q(b);N_GUARD::QAR2(B)
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