MESON Chess Problem Database

Problem Display
PID: 202807 (1B6/5Q1b/5RP1/R1r1N1p1/2r1k1K1/4P3/1n4N1/7B w - - 0 1)

Neptaev, Nikolai I

Zadachi i Etyudi, 2016

1B6/5Q1b/5RP1/R1r1N1p1/2r1k1K1/4P3/1n4N1/7B

#2

10 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.Qxd5#
    • 1...Rc6
      • 2.Qd5#
    • 1...Rc7
      • 2.Qd5#
    • 1...Rc8
      • 2.Qd5#
  • Tries
    • 1.Rd6?
      • threat
        • 2.Qf5#
      • 1...Kxe5+
        • 2.Rd4#
      • 1...Rxe5
        • 2.Qf3#
      • 1...Bxg6!
    • 1.Qd5+?
      • 1...Kxd5+
        • 2.Sf4#
      • 1...Rxd5!
    • 1.Qb7+?
      • 1...Rd5
        • 2.Qxd5#
      • 1...Rc6!
  • Keys
    • 1.Re6!
      • threat
        • 2.Qf3#
      • 1...Kd5+
        • 2.Sf4#
      • 1...Rxe5
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • R(d);N_GUARD::QAB1(I),XR(d)
    • R(d);N_GUARD::QAB1(I)
  • Tries
    • Try
      • R(G);
      • Threat
        • QAB1(I)
      • Vars
        • K(c);CHECK,P-FLIGHT,P_SPINR(d),XS(F)::B(J)+R(G)
        • R(d);XS(F)::QAB1(I)
      • Refutation
        • B(f);XP(H)
    • Try
      • Q(I);CHECK
      • Vars
        • K(c);CHECK,P_SPINR(d),S_FLIGHT,XQ(I)::B(A)+S(B),DCHECK
      • Refutation
        • R(d);XQ(I)
    • Try
      • Q(I);CHECK
      • Vars
        • R(d);N_GUARD,P_SPINR(d)::QAB1(I),XR(d)
      • Refutation
        • R(d);P_SPINR(d)
  • Actual
    • R(G);
    • Threat
      • QAB1(I)
    • Vars
      • K(c);CHECK,P_SPINR(d),S_FLIGHT::B(A)+S(B),DCHECK
      • R(d);P_SPINR(d),XS(F)::QAB1(I)
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