MESON Chess Problem Database

Problem Display
PID: 37604 (r7/pNqP2B1/1p2R3/3k1P2/1RNp1p1r/K1p2n2/6Qn/8 w - - 0 1)

Shanshin, Valery Yurevich

Slesarenko, Anatoly Vasilevich

2nd Prize, Banska Bystrica (BABY)-50 JT, 1993

r7/pNqP2B1/1p2R3/3k1P2/1RNp1p1r/K1p2n2/6Qn/8

#2

9 + 11

4393 Uralski Problemist 1993
3705 Album Russia (1992-1994) 2000
3681 FIDE Album (1992-1994) 2001
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qc6
      • 2.Re5#
    • 1...Sf1
      • 2.Qxf3#
    • 1...Sg4
      • 2.Qxf3#
  • Tries
    • 1.Sd2?
      • threat
        • 2.Rxd4#
      • 1...Qxb7
        • 2.Rb5#
      • 1...Qd6
        • 2.Rxd6#
      • 1...Qe5
        • 2.Rb5#
      • 1...Qc4
        • 2.Rd6#
      • 1...d3
        • 2.Rd4#
      • 1...Qc5!
    • 1.Se3+?
      • 1...dxe3
        • 2.Rd4#
      • 1...fxe3!
    • 1.Sxb6+?
      • 1...Qxb6
        • 2.Qa2#
      • 1...axb6+!
    • 1.Qa2?
      • threat
        • 2.Se3#
        • 2.Sxb6#
      • 1...Qxc4
        • 2.Rb5#
        • 2.Qxc4#
      • 1...Qxb7
        • 2.Rb5#
      • 1...Qe5
        • 2.Sd2#
      • 1...Qd6
        • 2.Sca5#
      • 1...b5
        • 2.Se3#
        • 2.Sb6#
      • 1...Se5!
  • Keys
    • 1.Sca5!
      • threat
        • 2.Rxd4#
      • 1...Qxb7
        • 2.Rb5#
      • 1...Qe5
        • 2.Rxe5#
      • 1...Qd6
        • 2.Qa2#
      • 1...Qc4
        • 2.Re5#
      • 1...Qc5
        • 2.Re5#
      • 1...d3
        • 2.Rd4#

Anticipated by 86842(1992)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 3
  • Sets
    • Q(j);N_GUARD,SBLOCK::R1(F)
    • S(a);N_GUARD::QAB(A),XS(c)
  • Tries
    • Try
      • S(D);
      • Threat
        • R1(C),XP(d)
      • Vars
        • Q(j);N_GUARD,XS(G)::R(C)
        • Q(j);N_GUARD,P_PINR(C)::R1(F),XQ(j)
        • Q(j);N_GUARD::R(C)
        • Q(j);N_GUARD::R1(F)
        • P(d);::R1(C)
      • Refutation
        • Q(j);P_PINR(C)
    • Try
      • S(D);CHECK
      • Vars
        • P(d);XS(D)::R1(C)
      • Refutation
        • P(e);XS(D)
    • Try
      • S(D);CHECK,XP(h)
      • Vars
        • Q(j);XS(D)::QAB(A)
      • Refutation
        • P(i);CHECK,XS(D)
    • Try
      • Q(A);N_PINS(c)
      • Threat
        • DUALS(2)
      • Vars
        • Q(j);N_GUARD,XS(G)::R(C)
        • Q(j);N_GUARD::QAB(A)+S(D)
        • Q(j);N_GUARD,P_PINR(C)::QAB(A)+S(D)
      • Refutation
        • S(c);
  • Actual
    • S(D);
    • Threat
      • R1(C),XP(d)
    • Vars
      • Q(j);N_GUARD,XS(G)::R(C)
      • Q(j);N_GUARD::R1(F),XQ(j)
      • Q(j);N_GUARD,P_PINR(C)::QAB(A)
      • Q(j);N_GUARD::R1(F)
      • Q(j);N_GUARD,P_PINR(C)::R1(F)
      • P(d);::R1(C)
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