MESON Chess Problem Database

Problem Display
PID: 238541 (3r4/5p2/5N1R/1R1pk2K/1B1p1pB1/2P1NP2/q3p2Q/7b w - - 0 1)

Shanshin, Valery Yurevich

Slesarenko, Anatoly Vasilevich

Pat a Mat, 1988

3r4/5p2/5N1R/1R1pk2K/1B1p1pB1/2P1NP2/q3p2Q/7b

#2

10 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qb1
      • 2.Sc4#
    • 1...Qc4
      • 2.Sxc4#
    • 1...Qa1
      • 2.Sc4#
    • 1...Qb2
      • 2.Sc4#
    • 1...Qc2
      • 2.Sc4#
    • 1...Qd2
      • 2.Sc4#
    • 1...Qa3
      • 2.Sc4#
    • 1...Qa4
      • 2.Sc4#
    • 1...Qa5
      • 2.Sc4#
    • 1...Qa6
      • 2.Sc4#
    • 1...Qa7
      • 2.Sc4#
    • 1...Qa8
      • 2.Sc4#
    • 1...Rd7
      • 2.Sxd7#
    • 1...Ra8
      • 2.Sd7#
    • 1...Rb8
      • 2.Sd7#
    • 1...Rc8
      • 2.Sd7#
    • 1...Re8
      • 2.Sd7#
    • 1...Rf8
      • 2.Sd7#
    • 1...Rg8
      • 2.Sd7#
    • 1...Rh8
      • 2.Sd7#
  • Tries
    • 1.Sexd5?
      • threat
        • 2.Qxf4#
      • 1...Qxd5
        • 2.Qxe2#
      • 1...Rxd5
        • 2.Sd7#
      • 1...Qd2!
    • 1.Qh4?
      • threat
        • 2.Qg5#
      • 1...Qb1
        • 2.Sc4#
      • 1...Qc2
        • 2.Sc4#
      • 1...Rg8
        • 2.Sd7#
      • 1...dxc3!
  • Keys
    • 1.Sfxd5!
      • threat
        • 2.Qxf4#
      • 1...Qxd5
        • 2.Sc4#
      • 1...Rxd5
        • 2.Bd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 20
  • Sets
    • Q(b);N_GUARD::S(C)
    • Q(b);N_GUARD::S(C),XQ(b)
    • R(i);N_GUARD::S(I),XR(i)
    • R(i);N_GUARD::S(I)
    • R(i);N_GUARD,P_PINR(J)::S(I)
  • Tries
    • Try
      • S(C);XP(f)
      • Threat
        • QAB1(A),XP(e)
      • Vars
        • Q(b);N_GUARD,P_SPINQ(b),XS(C)::QAR(A),XP(c)
        • R(i);N_GUARD,P_SPINR(i),XS(C)::S(I)
      • Refutation
        • Q(b);
    • Try
      • Q(A);N_PINP(e),P_PINP(f)
      • Threat
        • QAR2(A)
      • Vars
        • Q(b);N_GUARD::S(C)
        • R(i);N_GUARD::S(I)
      • Refutation
        • P(d);XP(B)
  • Actual
    • S(I);XP(f)
    • Threat
      • QAB1(A),XP(e)
    • Vars
      • Q(b);N_GUARD,P_SPINQ(b),XS(I)::S(C)
      • R(i);N_GUARD,P_SPINR(i),XS(I)::B(E)
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