MESON Chess Problem Database

Problem Display
PID: 235089 (8/5p2/4RK2/3pN1p1/1pp1k1p1/1P1pNRPb/Q7/BBb4n w - - 0 1)

Shanshin, Valery Yurevich

Gaudium, 2015

8/5p2/4RK2/3pN1p1/1pp1k1p1/1P1pNRPb/Q7/BBb4n

#2

10 + 11

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...cxb3
      • 2.Bxd3#
    • 1...d4
      • 2.Qa8#
  • Tries
    • 1.S3xc4?
      • threat
        • 2.Sd6#
        • 2.Bxd3#
      • 1...gxf3
        • 2.Bxd3#
      • 1...dxc4
        • 2.Qa8#
      • 1...d4
        • 2.Qa8#
      • 1...Bf1
        • 2.Sd6#
      • 1...Sf2
        • 2.Sd6#
      • 1...Bb2!
    • 1.Sxd3+?
      • 1...fxe6
        • 2.Se1#
        • 2.Se5#
      • 1...Kxf3!
    • 1.Rf4+?
      • 1...Kxe3
        • 2.Sxc4#
        • 2.Sxg4#
        • 2.Sxf7#
        • 2.Bd4#
      • 1...gxf4!
    • 1.Qe2?
      • threat
        • 2.Sxf7#
      • 1...gxf3
        • 2.Qxf3#
      • 1...Bb2
        • 2.Sf5#
      • 1...c3
        • 2.Qxd3#
      • 1...fxe6!
    • 1.Qa7?
      • threat
        • 2.Qd4#
      • 1...Bxe3
        • 2.Rxe3#
        • 2.Qxe3#
      • 1...c3
        • 2.Bxd3#
      • 1...d4
        • 2.Qxd4#
        • 2.Qb7#
        • 2.Qa8#
      • 1...Bb2!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Sd6#
      • 1...gxf3
        • 2.Sxf7#
      • 1...d4
        • 2.Qa8#
      • 1...Bb2
        • 2.Re3#
      • 1...c3
        • 2.Bxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • P(f);N_GUARD,XP(D)::B(B),XP(c)
    • P(i);OGATEB::QAB(C)
  • Tries
    • Try
      • S(E);XP(f)
      • Threat
        • DUALS(2)
      • Vars
        • P(h);XR(F)::B(B),XP(c)
        • P(i);OGATEB,XS(E)::QAB(C)
        • P(i);OGATEB::QAB(C)
        • B(d);::S(E)
        • S(b);::S(E)
      • Refutation
        • B(a);P_PINS(H)
    • Try
      • S(H);CHECK,XP(c)
      • Refutation
        • K(g);S_FLIGHT,XR(F)
    • Try
      • R(F);CHECK
      • Refutation
        • P(j);XR(F)
    • Try
      • Q(C);
      • Threat
        • R(I)+S(H),XP(k)
      • Vars
        • P(h);OGATE,XR(F)::QAB1(C),XP(h)
        • B(a);N_GUARD,P_PINS(H)::QAR(C)+S(E)
        • P(f);N_GUARD::QAB1(C),XP(c)
      • Refutation
        • P(k);XR(I)
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Vars
        • P(f);N_GUARD::B(B),XP(c)
      • Refutation
        • B(a);P_PINS(H)
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • P(h);SBLOCK,XR(F)::R(I)+S(H),XP(k)
      • P(i);OGATEB::QAB(C)
      • B(a);N_GUARD,P_PINS(H)::R1(F)
      • P(f);N_GUARD::B(B),XP(c)
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