MESON Chess Problem Database

Problem Display
PID: 243668 (5Qbq/p1rPB3/R6p/1k1P2p1/R3p3/p1p5/r1B2b2/1N5K w - - 0 1)

Bantysh, Nikolai Ivanovich

Pat a Mat, 1995

5Qbq/p1rPB3/R6p/1k1P2p1/R3p3/p1p5/r1B2b2/1N5K

#2

9 + 12

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rb2
      • 2.Sxa3#
    • 1...Rxc2
      • 2.Sxa3#
    • 1...Rc4
      • 2.R4a5#
    • 1...Rc5
      • 2.Qb8#
    • 1...Bc5
      • 2.Qf1#
  • Tries
    • 1.Bb3?
      • threat
        • 2.R4a5#
      • 1...Rc5
        • 2.Qb8#
      • 1...Bc5
        • 2.Bc4#
      • 1...Bb6!
    • 1.Bd3+?
      • 1...Rc4
        • 2.Bxc4#
        • 2.R4a5#
      • 1...exd3!
    • 1.Bc5?
      • threat
        • 2.R6a5#
      • 1...Rxc5
        • 2.Qb8#
      • 1...Bxc5
        • 2.Qf1#
      • 1...Bxd5!
    • 1.Bd8?
      • threat
        • 2.Qb4#
      • 1...Rb2
        • 2.Sxa3#
      • 1...Rc4
        • 2.R4a5#
        • 2.R6a5#
      • 1...Rc5
        • 2.R6a5#
      • 1...Bc5
        • 2.Qf1#
      • 1...Qd4!
    • 1.Qb8+?
      • 1...Bb6
        • 2.R6a5#
      • 1...Rb7!
  • Keys
    • 1.Bf6!
      • threat
        • 2.Qb4#
      • 1...Rb2
        • 2.Sxa3#
      • 1...Rc4
        • 2.R4a5#
      • 1...Rc5
        • 2.Qb8#
      • 1...Bc5
        • 2.Sxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • R(a);N_GUARD::S(A),XP(c)
    • R(a);N_GUARD,XB(C)::S(A),XP(c)
    • R(j);SBLOCK::R1(D)
    • R(j);N_GUARD,S_CUTB(b)::QAR(I)
    • B(b);OGATE::QAB(I)
  • Tries
    • Try
      • B(C);
      • Threat
        • R1(D)
      • Vars
        • R(j);N_GUARD,S_CUTB(b)::QAR(I)
        • B(b);S_CUTR(j)::B(C)
      • Refutation
        • B(b);
    • Try
      • B(C);CHECK
      • Refutation
        • P(e);XB(C)
    • Try
      • B(H);
      • Threat
        • R1(F)
      • Vars
        • R(j);N_GUARD,SBLOCK,XB(H)::QAR(I)
        • B(b);OGATE,SBLOCK,XB(H)::QAB(I)
      • Refutation
        • B(k);XP(E)
    • Try
      • B(H);
      • Threat
        • QAR1(I)
      • Vars
        • R(a);N_GUARD::S(A),XP(c)
        • R(j);::R1(F)
        • B(b);OGATE,SBLOCK::QAB(I)
      • Refutation
        • Q(l);
    • Try
      • Q(I);CHECK
      • Vars
        • B(b);P_SPINB(b)::R1(F)
      • Refutation
        • R(j);P_SPINR(j)
  • Actual
    • B(H);
    • Threat
      • QAR1(I)
    • Vars
      • R(a);N_GUARD::S(A),XP(c)
      • R(j);SBLOCK::R1(D)
      • R(j);N_GUARD,SBLOCK,S_CUTB(b)::QAR(I)
      • B(b);S_CUTR(j)::S(A),XP(d)
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