MESON Chess Problem Database

Problem Display
PID: 232808 (6R1/4Q2p/8/r4p2/p4k2/7P/K2R1bPp/7n w - - 0 1)

Kichigin, Viktor Vladimirovich

Freie Presse, 1980

6R1/4Q2p/8/r4p2/p4k2/7P/K2R1bPp/7n

#2

6 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Be1
      • 2.Rd4#
    • 1...Bg3
      • 2.Rd4#
    • 1...Bd4
      • 2.Rxd4#
    • 1...Bh4
      • 2.Rd4#
    • 1...Sg3
      • 2.Rxf2#
  • Tries
    • 1.Re2?
      • threat
        • 2.Qg5#
      • 1...Be3
        • 2.Qxe3#
      • 1...Bh4
        • 2.Qb4#
        • 2.Qxh4#
        • 2.Qe3#
      • 1...h6!
    • 1.Rd3?
      • threat
        • 2.Rf3#
      • 1...Be3
        • 2.Qxe3#
      • 1...Re5!
    • 1.Rd5?
      • threat
        • 2.Qe5#
      • 1...Bd4
        • 2.Rxd4#
      • 1...Rxd5!
    • 1.Qb4+?
      • 1...Ke3
        • 2.Qd4#
      • 1...Bd4
        • 2.Qxd4#
      • 1...Ke5!
    • 1.Qh4+?
      • 1...Ke3
        • 2.Qd4#
      • 1...Ke5
        • 2.Re8#
      • 1...Bxh4!
    • 1.Qg5+?
      • 1...Ke5
        • 2.Re8#
      • 1...Ke4!
  • Keys
    • 1.Rg3!
      • threat
        • 2.Rf3#
      • 1...Kxg3
        • 2.Qg5#
      • 1...Bxg3
        • 2.Rd4#
      • 1...Sxg3
        • 2.Rxf2#
      • 1...Re5
        • 2.Qh4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • B(b);N_GUARD::R(B)
    • B(b);N_GUARD::R(B),XB(b)
    • S(a);N_GUARD::R(B),XB(b)
  • Tries
    • Try
      • R(B);
      • Threat
        • QAB1(E)
      • Vars
        • B(b);N_GUARD::QAB1(E),XB(b)
      • Refutation
        • P(h);
    • Try
      • R(B);
      • Threat
        • R1(B)
      • Vars
        • B(b);N_GUARD::QAB1(E),XB(b)
      • Refutation
        • R(f);
    • Try
      • R(B);
      • Threat
        • QAB1(E)
      • Vars
        • B(b);N_GUARD::R(B),XB(b)
      • Refutation
        • R(f);XR(B)
    • Try
      • Q(E);CHECK
      • Vars
        • K(e);S_FLIGHT::QAB1(E)
        • B(b);N_GUARD,P_SPINB(b)::QAR2(E),XB(b)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(e);OGATE,S_FLIGHT::QAB1(E)
        • K(e);S_FLIGHT::R(F)
      • Refutation
        • B(b);XQ(E)
    • Try
      • Q(E);CHECK
      • Vars
        • K(e);P_SPINP(g),S_FLIGHT::R(F)
      • Refutation
        • K(e);P-FLIGHT
  • Actual
    • R(F);
    • Threat
      • R1(F)
    • Vars
      • K(e);S_FLIGHT,XR(F)::QAR2(E)
      • B(b);N_GUARD,SBLOCK,XR(F)::R(B)
      • S(a);N_GUARD,SBLOCK,XR(F)::R(B),XB(b)
      • R(f);SBLOCK::QAR2(E)
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