MESON Chess Problem Database

Problem Display
PID: 68826 (3Q4/8/K3p3/pR3pBB/4kP2/5N1R/r2P4/bb1n4 w - - 0 1)

Novitski, Petr Adrinovich

2nd Prize, Springaren, 1997

3Q4/8/K3p3/pR3pBB/4kP2/5N1R/r2P4/bb1n4

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rb2
      • 2.Re5#
      • 2.Qd4#
    • 1...Rxd2
      • 2.Sxd2#
    • 1...Bd4
      • 2.Qxd4#
    • 1...Be5
      • 2.Rxe5#
    • 1...Bd3
      • 2.Qa8#
    • 1...Sb2
      • 2.Re5#
      • 2.Qd4#
    • 1...Sc3
      • 2.Re5#
      • 2.Qd4#
    • 1...e5
      • 2.Qd5#
  • Tries
    • 1.Rb3?
      • threat
        • 2.Qa8#
      • 1...Bd3+
        • 2.Qxd3#
      • 1...Rxd2
        • 2.Sxd2#
      • 1...Rc2
        • 2.Qd3#
      • 1...Sc3
        • 2.Qd4#
      • 1...Se3
        • 2.Rxe3#
      • 1...Bc3!
    • 1.Rb4+?
      • 1...Bd4
        • 2.Rxd4#
        • 2.Qxd4#
      • 1...axb4+!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Re5#
      • 1...Bxd4
        • 2.Qa8#
      • 1...Se3
        • 2.Rxe3#
      • 1...Bd3
        • 2.Bf3#
      • 1...e5
        • 2.Rxe5#
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • R(d);XP(A)::S(B),XR(d)
    • B(a);N_GUARD::QAR1(I),XB(a)
    • B(a);N_GUARD::R1(E),XB(a)
    • B(b);P_PINR(E),SBLOCK::QAB(I)
    • P(h);N_GUARD::QAB1(I)
  • Tries
    • Try
      • R(E);
      • Threat
        • QAB(I)
      • Vars
        • B(b);CHECK,N_GUARD::QAB1(I),XB(b)
        • R(d);XP(A)::S(B),XR(d)
        • R(d);S_CUTB(b)::QAB1(I)
        • S(c);S_CUTB(a)::QAR1(I)
        • S(c);N_GUARD::R1(E),XS(c)
      • Refutation
        • B(a);
    • Try
      • R(E);CHECK
      • Refutation
        • P(f);CHECK,XR(E)
  • Actual
    • S(B);
    • Threat
      • R1(E)
    • Vars
      • B(a);SBLOCK,XS(B)::QAB(I)
      • S(c);N_GUARD::R1(C),XS(c)
      • B(b);P_PINR(E),SBLOCK::B(G)
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