MESON Chess Problem Database

Problem Display
PID: 266275 (8/1Qp2N2/4p1q1/2N2b1R/1B1k2r1/3Pn3/K2P4/8 w - - 0 1)

Shanshin, Valery Yurevich

Schweizerische Schachzeitung, 2019

8/1Qp2N2/4p1q1/2N2b1R/1B1k2r1/3Pn3/K2P4/8

#2

8 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Be4
      • 2.Bc3#
  • Tries
    • 1.Qe4+?
      • 1...Bxe4
        • 2.Bc3#
      • 1...Rxe4!
    • 1.Qc6?
      • threat
        • 2.Bc3#
      • 1...Bxd3
        • 2.Sb3#
      • 1...Sd1
        • 2.Qd7#
      • 1...Sd5!
  • Keys
    • 1.Qb5!
      • threat
        • 2.Sb3#
      • 1...Kd5
        • 2.Qd7#
      • 1...Bxd3
        • 2.Bc3#
      • 1...Sc4
        • 2.Qxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(d);::B(D)
  • Tries
    • Try
      • Q(G);CHECK
      • Vars
        • B(d);XQ(G)::B(D)
      • Refutation
        • R(c);XQ(G)
    • Try
      • Q(G);
      • Threat
        • B(D)
      • Vars
        • B(d);SBLOCK,XP(C)::S(E)
        • S(a);N_GUARD::QAR(G)
      • Refutation
        • S(a);
  • Actual
    • Q(G);
    • Threat
      • S(E)
    • Vars
      • K(b);P-FLIGHT,P_SPINB(d),S_CUTS(a)::QAR2(G)
      • B(d);XP(C)::B(D)
      • S(a);N_GUARD::QAR1(G),XS(a)
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