MESON Chess Problem Database

Problem Display
PID: 233216 (K7/6p1/p2Q1P1p/2p5/4k1P1/r1r4p/2RB3N/5B2 w - - 0 1)

Makaronets, Leonid

Freie Presse, 1980

K7/6p1/p2Q1P1p/2p5/4k1P1/r1r4p/2RB3N/5B2

#2

8 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rb3
      • 2.Rc4#
    • 1...Re3
      • 2.Rc4#
    • 1...Rf3
      • 2.Rc4#
    • 1...Rg3
      • 2.Rc4#
    • 1...Rc4
      • 2.Rxc4#
  • Tries
    • 1.Bg2+?
      • 1...Rf3
        • 2.Rc4#
      • 1...hxg2!
    • 1.Bc4?
      • threat
        • 2.Qf4#
        • 2.Qd5#
      • 1...Rxc4
        • 2.Rxc4#
      • 1...Rd3
        • 2.Qf4#
      • 1...Rf3
        • 2.Qd5#
      • 1...g5
        • 2.Qd5#
      • 1...Re3!
    • 1.Bxc3?
      • threat
        • 2.Re2#
        • 2.Qe5#
      • 1...Ke3
        • 2.Re2#
        • 2.Qe5#
      • 1...gxf6
        • 2.Re2#
      • 1...Ra2
        • 2.Qe5#
      • 1...Rxc3!
    • 1.Rxc3?
      • threat
        • 2.Bd3#
        • 2.Rc4#
      • 1...Ra4
        • 2.Bd3#
        • 2.Re3#
      • 1...c4
        • 2.Rxc4#
      • 1...Rxc3!
  • Keys
    • 1.Be3!
      • threat
        • 2.Qe6#
      • 1...Kxe3
        • 2.Re2#
        • 2.Qe5#
      • 1...Rxe3
        • 2.Rc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 4
  • Sets
    • R(b);OGATE::R(B)
    • R(b);OGATE::R(B),XR(b)
  • Tries
    • Try
      • B(A);CHECK
      • Vars
        • R(b);OGATE,P_SPINR(b)::R(B)
      • Refutation
        • P(c);XB(A)
    • Try
      • B(A);
      • Threat
        • DUALS(2)
      • Vars
        • R(b);OGATE,XB(A)::R(B),XR(b)
        • R(b);::QAR1(F)
        • R(b);::QAB1(F)
        • P(h);::QAB1(F)
      • Refutation
        • R(b);
    • Try
      • B(C);XR(b)
      • Threat
        • DUALS(2)
      • Vars
        • P(h);XP(G)::R(B)
        • R(a);::QAR1(F)
      • Refutation
        • R(a);XB(C)
    • Try
      • R(B);XR(b)
      • Threat
        • DUALS(2)
      • Vars
        • P(e);::R(B),XP(e)
      • Refutation
        • R(a);XR(B)
  • Actual
    • B(C);
    • Threat
      • QAR2(F)
    • Vars
      • R(b);OGATE,SBLOCK,XB(C)::R(B)
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