MESON Chess Problem Database

Problem Display
PID: 169170 (2b4K/b7/5N2/r7/1RP2P1k/2p1B2p/1r2Q2P/q7 w - - 0 1)

Markovtsy, Vassyl Yuriovich

5th HM., SuperProblem 162. TT, 2016

2b4K/b7/5N2/r7/1RP2P1k/2p1B2p/1r2Q2P/q7

#2

8 + 8

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rb1
      • 2.Qf2#
    • 1...Rb3
      • 2.Qf2#
    • 1...Rxb4
      • 2.Qf2#
    • 1...Ra2
      • 2.Qh5#
    • 1...Ra3
      • 2.Qh5#
    • 1...Ra4
      • 2.Qh5#
    • 1...Rc5
      • 2.Bf2#
    • 1...Rf5
      • 2.Qg4#
    • 1...Rh5+
      • 2.Qxh5#
    • 1...Ra6
      • 2.Qh5#
    • 1...Bc5
      • 2.Qh5#
    • 1...Bb8
      • 2.Bf2#
    • 1...Bg4
      • 2.Qxg4#
    • 1...Bf5
      • 2.Qh5#
    • 1...Ba6
      • 2.Qg4#
    • 1...Bb7
      • 2.Qg4#
    • 1...c2
      • 2.Qf2#
  • Tries
    • 1.Qe1+?
      • 1...Rf2
        • 2.Qxf2#
      • 1...Qxe1!
    • 1.f5?
      • threat
        • 2.Qg4#
        • 2.Qh5#
      • 1...Rxe2
        • 2.c5#
      • 1...Rxf5
        • 2.Qg4#
      • 1...Bxf5
        • 2.Qh5#
      • 1...Qg1
        • 2.Qh5#
      • 1...Qd1!
  • Keys
    • 1.c5!
      • threat
        • 2.Bf2#
        • 2.Qh5#
      • 1...Rxe2
        • 2.f5#
      • 1...Rxc5
        • 2.Bf2#
      • 1...Bxc5
        • 2.Qh5#
      • 1...Qe1
        • 2.Qh5#
      • 1...Qd1
        • 2.Bf2#
      • 1...Qf1
        • 2.Qh5#
      • 1...Qg1
        • 2.Qh5#
      • 1...Bg4
        • 2.Bf2#
        • 2.Qxg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 15
  • Sets
    • R(b);N_GUARD::QAB(A)
    • R(b);N_GUARD,XR(D)::QAB(A)
    • R(f);N_GUARD::QAR1(A)
    • R(f);S_CUTB(g)::B(C)
    • R(f);S_CUTB(h)::QAR1(A)
    • R(f);CHECK,N_GUARD::QAR1(A),XR(f)
    • R(f);N_GUARD,SBLOCK::QAR1(A)
    • B(g);S_CUTR(f)::QAR1(A)
    • B(g);N_GUARD::B(C)
    • B(h);N_GUARD::QAR1(A),XB(h)
    • B(h);S_CUTR(f)::QAR1(A)
    • B(h);N_GUARD,SBLOCK::QAR1(A)
    • B(h);N_GUARD::QAR1(A)
    • P(c);S_CUTR(b)::QAB(A)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::QAB(A),XR(b)
      • Refutation
        • Q(a);XQ(A)
    • Try
      • P(F);
      • Threat
        • DUALS(2)
      • Vars
        • R(b);N_GUARD,XQ(A)::R(D)+P(E)
        • R(f);XP(F)::QAR1(A)
        • B(h);XP(F)::QAR1(A)
        • Q(a);::QAR1(A)
      • Refutation
        • Q(a);
  • Actual
    • P(E);
    • Threat
      • DUALS(2)
    • Vars
      • R(b);N_GUARD,XQ(A)::R(D)+P(F)
      • R(f);XP(E)::B(C)
      • B(g);XP(E)::QAR1(A)
      • Q(a);::QAR1(A)
      • Q(a);::B(C)
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