MESON Chess Problem Database

Problem Display
PID: 238166 (8/B1p2N2/2P2p2/5P2/4k1pP/5NP1/2R3R1/K6Q w - - 0 1)

Murashev, Pavel Aleksandrovich

Schach, 2007

8/B1p2N2/2P2p2/5P2/4k1pP/5NP1/2R3R1/K6Q

#2

11 + 4

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf3
      • 2.Rg1#
  • Tries
    • 1.Se1?
      • threat
        • 2.Rgf2#
      • 1...Kd5
        • 2.Rg1#
        • 2.Rgd2#
        • 2.Rge2#
        • 2.Rgf2#
        • 2.Rh2#
      • 1...Kxf5!
    • 1.Sg1?
      • 1...Kd3
        • 2.Rgd2#
      • 1...Kd5
        • 2.Rgd2#
        • 2.Rge2#
        • 2.Rgf2#
        • 2.Rh2#
      • 1...Kxf5!
    • 1.Sh2?
      • 1...Kd3
        • 2.Rgd2#
      • 1...Kd5
        • 2.Rg1#
        • 2.Rgd2#
        • 2.Rge2#
        • 2.Rgf2#
      • 1...Kxf5!
    • 1.Sd6+?
      • 1...Kd3
        • 2.Se1#
        • 2.Rgd2#
        • 2.Qd1#
        • 2.Qf1#
      • 1...Kxf3
        • 2.Rcf2#
        • 2.Rc3#
        • 2.Rg1#
        • 2.Qd1#
        • 2.Qf1#
      • 1...Kd5
        • 2.Rgd2#
        • 2.Qd1#
      • 1...cxd6!
    • 1.Rcd2?
      • 1...Kxf3
        • 2.Rg1#
      • 1...gxf3
        • 2.Qb1#
      • 1...Kxf5!
    • 1.Rge2+?
      • 1...Kd3
        • 2.Se1#
        • 2.Qd1#
      • 1...Kd5
        • 2.Se1#
        • 2.Sg1#
        • 2.Sd2#
        • 2.Sh2#
        • 2.Sd4#
        • 2.S3e5#
        • 2.S3g5#
        • 2.Rc5#
        • 2.Qd1#
      • 1...Kxf5!
    • 1.Rgf2?
      • threat
        • 2.Se1#
        • 2.S3e5#
      • 1...Kd3
        • 2.Se1#
      • 1...Kd5
        • 2.Se1#
        • 2.Sg1#
        • 2.Sd2#
        • 2.Sh2#
        • 2.Sd4#
        • 2.S3e5#
        • 2.S3g5#
      • 1...gxf3
        • 2.Qxf3#
      • 1...Kxf5!
    • 1.Qe1+?
      • 1...Kd3
        • 2.Rc3#
        • 2.Rgd2#
        • 2.Qe2#
        • 2.Qe3#
      • 1...Kxf3
        • 2.Rcf2#
        • 2.Qe2#
        • 2.Qe3#
      • 1...Kd5
        • 2.Rc5#
        • 2.Rgd2#
        • 2.Qe6#
      • 1...Kxf5!
  • Keys
    • 1.Qb1!
      • 1...Kd3
        • 2.Rc1#
      • 1...Kxf3
        • 2.Rcf2#
      • 1...Kd5
        • 2.Rc5#
      • 1...Kxf5
        • 2.Rce2#
      • 1...gxf3
        • 2.Rcd2#

This is a version of 238167

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(a);OGATEB,S_FLIGHT,XS(E)::QAB(B)+R(D)
  • Tries
    • Try
      • S(E);
      • Threat
        • QAB(B)+R(D)
      • Refutation
        • K(a);S_FLIGHT,XP(H)
    • Try
      • S(E);
      • Vars
        • K(a);S_FLIGHT::R1(D)
      • Refutation
        • K(a);S_FLIGHT,XP(H)
    • Try
      • S(E);
      • Vars
        • K(a);S_FLIGHT::R1(D)
      • Refutation
        • K(a);S_FLIGHT,XP(H)
    • Try
      • S(K);CHECK
      • Refutation
        • P(d);XS(K)
    • Try
      • R(C);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XS(E)::QAB(B)+R(D)
        • P(b);SBLOCK,XS(E)::QAB(B)
      • Refutation
        • K(a);S_FLIGHT,XP(H)
    • Try
      • R(D);CHECK
      • Refutation
        • K(a);S_FLIGHT,XP(H)
    • Try
      • R(D);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);S_FLIGHT::S(E)
        • P(b);OGATE,P_SPINP(b),XS(E)::QAB1(B),XP(b)
      • Refutation
        • K(a);S_FLIGHT,XP(H)
    • Try
      • Q(B);CHECK
      • Refutation
        • K(a);S_FLIGHT,XP(H)
  • Actual
    • Q(B);
    • Vars
      • K(a);S_FLIGHT::QAB(B)+R(C)
      • K(a);S_FLIGHT,XS(E)::R1(C)
      • K(a);S_FLIGHT::R1(C)
      • K(a);S_FLIGHT,XP(H)::QAB(B)+R(C)
      • P(b);SBLOCK,XS(E)::QAB(B)+R(C)
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