MESON Chess Problem Database

Problem Display
PID: 251087 (r3k3/3p4/3P1K2/5pp1/1R6/1R6/1r4Qp/1b5q w q - 0 1)

Kapustin, Fedor Mikhailovich

Novitski, Petr Adrinovich

Uralski Problemist, 2011

r3k3/3p4/3P1K2/5pp1/1R6/1R6/1r4Qp/1b5q

#2

5 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qd1
      • 2.Qxa8#
    • 1...Qe1
      • 2.Qxa8#
    • 1...Qf1
      • 2.Qxa8#
    • 1...Qg1
      • 2.Qxa8#
    • 1...Ra1
      • 2.Rb8#
    • 1...Ra2
      • 2.Rb8#
    • 1...Ra3
      • 2.Rb8#
    • 1...Ra4
      • 2.Rb8#
    • 1...Ra5
      • 2.Rb8#
    • 1...Ra6
      • 2.Rb8#
    • 1...Ra7
      • 2.Rb8#
    • 1...Rb8
      • 2.Rxb8#
    • 1...0-0-0
      • 2.Rc3#
      • 2.Rc4#
      • 2.Rb8#
  • Tries
    • 1.Rh3?
      • threat
        • 2.Rh8#
      • 1...Kd8
        • 2.Rh8#
      • 1...Kf8
        • 2.Rh8#
      • 1...0-0-0
        • 2.Rc3#
      • 1...Ba2!
    • 1.Qh3?
      • threat
        • 2.Qh8#
      • 1...Kd8
        • 2.Qh8#
      • 1...Kf8
        • 2.Qh8#
      • 1...0-0-0
        • 2.Rb8#
      • 1...Qd5!
    • 1.Qd5?
      • threat
        • 2.Qg8#
      • 1...Kd8
        • 2.Qg8#
      • 1...Kf8
        • 2.Qf7#
      • 1...0-0-0
        • 2.Rc3#
        • 2.Rc4#
        • 2.Rb8#
      • 1...Qxd5!
  • Keys
    • 1.Rh4!
      • threat
        • 2.Rh8#
      • 1...Kd8
        • 2.Rh8#
      • 1...Kf8
        • 2.Rh8#
      • 1...0-0-0
        • 2.Rc4#
      • 1...gxh4
        • 2.Qg8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 12
  • Sets
    • Q(b);N_GUARD::QAR(A),XR(h)
    • R(h);N_GUARD::R(C)
    • R(h);N_GUARD,P_PINP(D)::R(C)
    • R(h);N_GUARD::R(C),XR(h)
  • Tries
    • Try
      • R(B);
      • Threat
        • R(B)
      • Vars
        • K(i);P-FLIGHT::R(B)
        • K(i);0-0-0,OGATEB::R(B)
      • Refutation
        • B(a);
    • Try
      • Q(A);
      • Threat
        • QAR(A)
      • Vars
        • K(i);P-FLIGHT::QAR(A)
        • K(i);P-FLIGHT::QAR2(A)
        • K(i);0-0-0,S_CUTR(h)::R1(C)
      • Refutation
        • Q(b);
    • Try
      • Q(A);
      • Threat
        • QAR2(A)
      • Vars
        • K(i);P-FLIGHT::QAR(A)
        • K(i);N_GUARD,P-FLIGHT::QAR1(A)
      • Refutation
        • Q(b);XQ(A)
  • Actual
    • R(C);
    • Threat
      • R(C)
    • Vars
      • K(i);P-FLIGHT::R(C)
      • K(i);0-0-0,OGATEB::R(C)
      • P(f);OGATE,XR(C)::QAR2(A)
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