MESON Chess Problem Database

Problem Display
PID: 243217 (2n5/2pNb1P1/K4R1p/1P1kpB2/1p2R1rr/3P1ppp/bP6/3Q4 w - - 0 1)

Basisty, Mark Borisovich

Problemist Ukraini, 2017

2n5/2pNb1P1/K4R1p/1P1kpB2/1p2R1rr/3P1ppp/bP6/3Q4

#2

10 + 13

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rf4
      • 2.g8Q#
      • 2.g8B#
    • 1...Bb1
      • 2.Qb3#
    • 1...Bb3
      • 2.Qxb3#
    • 1...Bc4
      • 2.dxc4#
    • 1...Bd6
      • 2.Be6#
    • 1...Sd6
      • 2.Be6#
  • Tries
    • 1.Rc6?
      • threat
        • 2.Be6#
      • 1...Rxe4
        • 2.dxe4#
      • 1...Bd6
        • 2.Sf6#
      • 1...Sd6
        • 2.Rc5#
      • 1...Rg6!
    • 1.Qg1?
      • threat
        • 2.Rxe5#
      • 1...Rxe4
        • 2.g8Q#
        • 2.g8B#
      • 1...Bxf6
        • 2.Qc5#
      • 1...Bd6
        • 2.Be6#
      • 1...f2!
  • Keys
    • 1.d4!
      • threat
        • 2.dxe5#
      • 1...Kc4
        • 2.Be6#
      • 1...Rxe4
        • 2.g8Q#
        • 2.g8B#
      • 1...exd4
        • 2.Qxd4#
      • 1...Bb1
        • 2.Qb3#
      • 1...Bb3
        • 2.Qxb3#
      • 1...Bc4
        • 2.Rxe5#
      • 1...Bc5
        • 2.dxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • R(f);N_GUARD::P=Q
    • B(a);N_GUARD::QAB(A)
    • B(a);N_GUARD::QAB(A),XB(a)
    • B(a);OGATE,P_PINP(E)::QAR(A)+P(C)DCHECK,XB(a)
    • B(l);SBLOCK::B(F)
    • S(m);SBLOCK::B(F)
  • Tries
    • Try
      • R(H);
      • Threat
        • B(F)
      • Vars
        • R(f);OGATE,XR(D)::QAR(A)+P(C)DCHECK,XR(f)
        • B(l);N_GUARD::S(I)
        • S(m);SBLOCK,S_CUTB(l)::R1(H)
      • Refutation
        • R(f);P_PINR(H)
    • Try
      • Q(A);
      • Threat
        • R1(D),XP(i)
      • Vars
        • R(f);N_GUARD,XR(D)::P=Q
        • B(l);N_GUARD,XR(H)::QAR1(A)
        • B(l);SBLOCK::B(F)
      • Refutation
        • P(b);
  • Actual
    • P(C);
    • Threat
      • QAR(A)+P(C),XP(i)
    • Vars
      • K(h);S_FLIGHT::B(F)
      • R(f);N_GUARD,XR(D)::P=Q
      • P(i);OGATE,P_SPINP(i),XP(C)::QAR1(A),XP(i)
      • B(a);N_GUARD::QAB(A)
      • B(a);N_GUARD::QAB(A),XB(a)
      • B(a);P_PINP(E),SBLOCK::R1(D),XP(i)
      • B(l);OGATE::QAR(A)+P(C),XB(l)
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