MESON Chess Problem Database

Problem Display
PID: 200563 (1qR4n/4p3/1p3p2/4kN2/bBPppN1Q/6KB/3P4/4R3 w - - 0 1)

Senkus, Raimondas

Problemas, 1993

1qR4n/4p3/1p3p2/4kN2/bBPppN1Q/6KB/3P4/4R3

#2

10 + 9

3713 Snap 2019

SOLUTION

  • SOUND
  • Sets
    • 1...d3
      • 2.Bc3#
    • 1...b5
      • 2.Rc5#
    • 1...e6
      • 2.Sd3#
  • Tries
    • 1.Sg6+?
      • 1...Sxg6
        • 2.Rxe4#
        • 2.Qxe4#
      • 1...Ke6+!
    • 1.Sd6?
      • threat
        • 2.Sd3#
        • 2.Rxe4#
      • 1...Qxd6
        • 2.Sd3#
      • 1...exd6
        • 2.Sd3#
      • 1...d3
        • 2.Rxe4#
      • 1...Qb7
        • 2.Sd3#
      • 1...Qa8
        • 2.Sd3#
      • 1...Bc6
        • 2.Sd3#
      • 1...e3
        • 2.Sd3#
      • 1...f5
        • 2.Qxe7#
        • 2.Qxh8#
      • 1...Bc2!
    • 1.Sxe7?
      • threat
        • 2.Sd3#
      • 1...Bc2
        • 2.Sc6#
      • 1...f5
        • 2.Qxh8#
      • 1...d3!
    • 1.Bc3?
      • threat
        • 2.Bxd4#
      • 1...dxc3
        • 2.d4#
      • 1...e3
        • 2.Rxe3#
      • 1...Qd6!
    • 1.Bxe7?
      • threat
        • 2.Bxf6#
        • 2.Qxf6#
      • 1...Qd6
        • 2.Bxd6#
      • 1...e3!
  • Keys
    • 1.Sxd4!
      • threat
        • 2.Sf3#
      • 1...Kxd4
        • 2.Bc3#
      • 1...e3
        • 2.Sd3#
      • 1...Bd1
        • 2.Sc6#

Anticipated by 177882(1986)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • P(b);OGATEB::B(E)
    • P(e);N_GUARD::R(J)
    • P(g);SBLOCK::S(G)
  • Tries
    • Try
      • S(G);CHECK
      • Refutation
        • K(d);CHECK,P-FLIGHT
    • Try
      • S(I);
      • Threat
        • DUALS(2)
      • Vars
        • Q(h);XS(I)::S(G)
        • P(g);XS(I)::S(G)
        • P(b);::R1(A),XP(c)
        • Q(h);::S(G)
        • B(a);::S(G)
        • P(c);::S(G)
      • Refutation
        • B(a);
    • Try
      • S(I);XP(g)
      • Threat
        • S(G)
      • Vars
        • B(a);N_GUARD::S(I)
        • P(f);OGATEB::QAB(H),XS(i)
      • Refutation
        • P(b);
    • Try
      • B(E);N_PINP(c),P_PINP(b)
      • Threat
        • B(E),XP(b)
      • Vars
        • P(b);N_SPINP(b),OGATE,P_SPINP(c),XB(E)::P(B)
        • P(c);N_SPINP(b),OGATEB,P_SPINP(c)::R(A),XP(c)
      • Refutation
        • Q(h);
    • Try
      • B(E);XP(g)
      • Threat
        • DUALS(2)
      • Vars
        • Q(h);N_GUARD::B(E),XQ(h)
      • Refutation
        • P(c);
  • Actual
    • S(I);XP(b)
    • Threat
      • S(I)
    • Vars
      • K(d);N_SPINP(c),OGATEB,P_PINS(G),S_FLIGHT,XS(I)::B(E)
      • P(c);::S(G)
      • B(a);N_GUARD::S(I)
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