MESON Chess Problem Database

Problem Display
PID: 230621 (8/2p5/2B5/8/2P5/Q2P1K2/2k3nR/1N2B3 w - - 0 1)

Markovtsy, Vassyl Yuriovich

64 Shakhmatnoe obozrenie, 2021

8/2p5/2B5/8/2P5/Q2P1K2/2k3nR/1N2B3

#2

8 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Bc3?
      • 1...Kxb1
        • 2.Qb2#
      • 1...Kd1
        • 2.Ba4#
      • 1...Kxd3!
    • 1.Bg3?
      • 1...Kd1
        • 2.Ba4#
      • 1...Kxb1!
    • 1.Bb4?
      • 1...Kd1
        • 2.Ba4#
      • 1...Kxb1!
    • 1.Bh4?
      • 1...Kd1
        • 2.Ba4#
      • 1...Kxb1!
    • 1.Ba5?
      • 1...Kd1
        • 2.Ba4#
      • 1...Kxb1!
    • 1.Rxg2+?
      • 1...Kxb1
        • 2.Qb2#
      • 1...Kd1!
    • 1.Qb2+?
      • 1...Kd1
        • 2.Qd2#
      • 1...Kxd3
        • 2.Qc3#
      • 1...Kxb2!
    • 1.Qb4?
      • 1...Kd1
        • 2.Qd2#
      • 1...Kxd3
        • 2.Qc3#
      • 1...Kc1!
    • 1.Qb3+?
      • 1...Kc1
        • 2.Bd2#
      • 1...Kxb3!
    • 1.Qc3+?
      • 1...Kd1
        • 2.Ba4#
        • 2.Qd2#
      • 1...Kxb1!
    • 1.d4?
      • 1...Kxb1
        • 2.Be4#
      • 1...Kd1!
  • Keys
    • 1.Qa1!
      • 1...Kc1
        • 2.Sa3#
      • 1...Kd1
        • 2.Sa3#
      • 1...Kb3
        • 2.Ba4#
      • 1...Kxd3
        • 2.Qc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(B);
      • Vars
        • K(a);N_SPINS(b),S_FLIGHT,XS(A)::QAR1(D)
        • K(a);N_SPINS(b),S_FLIGHT::B(H)
      • Refutation
        • K(a);N_SPINS(b),S_FLIGHT,XP(E)
    • Try
      • B(B);
      • Vars
        • K(a);N_SPINS(b),S_FLIGHT::B(H)
      • Refutation
        • K(a);N_SPINS(b),S_FLIGHT,XS(A)
    • Try
      • B(B);
      • Vars
        • K(a);N_SPINS(b),S_FLIGHT::B(H)
      • Refutation
        • K(a);N_SPINS(b),S_FLIGHT,XS(A)
    • Try
      • B(B);
      • Vars
        • K(a);N_SPINS(b),S_FLIGHT::B(H)
      • Refutation
        • K(a);N_SPINS(b),S_FLIGHT,XS(A)
    • Try
      • B(B);
      • Vars
        • K(a);N_SPINS(b),S_FLIGHT::B(H)
      • Refutation
        • K(a);N_SPINS(b),S_FLIGHT,XS(A)
    • Try
      • R(C);CHECK,XS(b)
      • Vars
        • K(a);S_FLIGHT,XS(A)::QAR1(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);N_SPINS(b),OGATE,S_FLIGHT::QAR1(D)
        • K(a);N_SPINS(b),S_FLIGHT,XP(E)::QAR1(D)
      • Refutation
        • K(a);P-FLIGHT,XQ(D)
    • Try
      • Q(D);
      • Vars
        • K(a);N_SPINS(b),S_FLIGHT::QAR1(D)
        • K(a);N_SPINS(b),S_FLIGHT,XP(E)::QAR1(D)
      • Refutation
        • K(a);N_SPINS(b),P-FLIGHT
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);N_SPINS(b),P-FLIGHT::B(B)
      • Refutation
        • K(a);N_SPINS(b),S_FLIGHT,XQ(D)
    • Try
      • Q(D);CHECK
      • Refutation
        • K(a);N_SPINS(b),S_FLIGHT,XS(A)
    • Try
      • P(E);
      • Vars
        • K(a);N_SPINS(b),S_FLIGHT,XS(A)::B(H)
      • Refutation
        • K(a);N_SPINS(b),S_FLIGHT
  • Actual
    • Q(D);
    • Vars
      • K(a);N_SPINS(b),P-FLIGHT::QAR(D)+S(A)
      • K(a);N_SPINS(b),S_FLIGHT::QAR(D)+S(A)
      • K(a);N_SPINS(b),S_FLIGHT::B(H)
      • K(a);N_SPINS(b),S_FLIGHT,XP(E)::QAR1(D)
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