MESON Chess Problem Database

Problem Display
PID: 241255 (2r5/4P2p/1N6/Qp2Rp2/1P1k1P2/3P1rpK/bNPPp1B1/2n5 w - - 0 1)

Shanshin, Valery Yurevich

5th HM., Sachsische Zeitung, 1982-1983

2r5/4P2p/1N6/Qp2Rp2/1P1k1P2/3P1rpK/bNPPp1B1/2n5

#2

12 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rc4
      • 2.Rd5#
    • 1...Ra8
      • 2.c3#
    • 1...Rb8
      • 2.c3#
    • 1...Rd8
      • 2.c3#
    • 1...Re8
      • 2.c3#
    • 1...Rf8
      • 2.c3#
    • 1...Rg8
      • 2.c3#
    • 1...Rh8
      • 2.c3#
    • 1...Bb1
      • 2.Rd5#
    • 1...Bc4
      • 2.c3#
    • 1...Bd5
      • 2.Rxd5#
    • 1...Sb3
      • 2.Rd5#
  • Tries
    • 1.S2c4?
      • threat
        • 2.Rd5#
      • 1...Bxc4
        • 2.Qa1#
      • 1...Sxd3
        • 2.c3#
      • 1...Rd8
        • 2.exd8Q#
        • 2.exd8R#
      • 1...Rc5!
    • 1.Sxc8?
      • threat
        • 2.Qb6#
        • 2.Qa7#
        • 2.c3#
      • 1...Rxd3
        • 2.Qb6#
        • 2.Qa7#
      • 1...Sxd3
        • 2.c3#
      • 1...Sb3
        • 2.Qd8#
        • 2.c3#
      • 1...Rxf4!
    • 1.Qxa2?
      • threat
        • 2.Rd5#
        • 2.Qd5#
      • 1...Sxa2
        • 2.Rd5#
      • 1...Sxd3
        • 2.Qd5#
      • 1...Rc4
        • 2.Rd5#
      • 1...Rd8
        • 2.c3#
        • 2.exd8Q#
        • 2.exd8R#
      • 1...Sb3
        • 2.Rd5#
      • 1...Rc5!
  • Keys
    • 1.S6c4!
      • threat
        • 2.c3#
      • 1...Rxd3
        • 2.Rd5#
      • 1...Rxc4
        • 2.Qd8#

There are these versions: 241256

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 11
  • Sets
    • R(j);S_CUTB(b)::R1(J)
    • R(j);N_GUARD::P(B)
    • B(b);N_GUARD::R1(J)
    • B(b);S_CUTR(j)::P(B)
    • B(b);N_GUARD::R1(J),XB(b)
    • S(a);S_CUTB(b)::R1(J)
  • Tries
    • Try
      • S(A);
      • Threat
        • R1(J)
      • Vars
        • B(b);OGATE,XS(A)::QAB(I)
        • S(a);SBLOCK,XP(E)::P(B)
        • R(j);OGATE::PXR(j)=Q
      • Refutation
        • R(j);
    • Try
      • S(K);XR(j)
      • Threat
        • DUALS(3)
      • Vars
        • S(a);XP(E)::P(B)
      • Refutation
        • R(d);XP(H)
    • Try
      • Q(I);XB(b)
      • Threat
        • DUALS(2)
      • Vars
        • S(a);XQ(I)::R1(J)
        • S(a);XP(E)::QAR1(I)
        • R(j);::R1(J)
        • S(a);::R1(J)
      • Refutation
        • R(j);
  • Actual
    • S(K);
    • Threat
      • P(B)
    • Vars
      • R(d);XP(E)::R1(J)
      • R(j);N_GUARD,XS(K)::QAR(I)
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