MESON Chess Problem Database

Problem Display
PID: 942 (8/2K5/6p1/3R4/5kp1/3r1pN1/2bP1P2/2Q5 w - - 0 1)

Sokolow, WV

The Problemist Supplement, 1993

8/2K5/6p1/3R4/5kp1/3r1pN1/2bP1P2/2Q5

#2

6 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd2
      • 2.Qxd2#
    • 1...Ra3
      • 2.d3#
    • 1...Rb3
      • 2.d3#
    • 1...Rc3+
      • 2.dxc3#
    • 1...Re3
      • 2.dxe3#
    • 1...Rd4
      • 2.d3#
    • 1...Rxd5
      • 2.d4#
    • 1...g5
      • 2.Rf5#
  • Tries
    • 1.Kb6?
      • 1...Rxd2
        • 2.Qxd2#
      • 1...Rxd5
        • 2.d4#
      • 1...Ra3
        • 2.d3#
      • 1...Rc3
        • 2.dxc3#
        • 2.d3#
      • 1...Re3
        • 2.dxe3#
      • 1...Rd4
        • 2.d3#
      • 1...Bb1
        • 2.Qc7#
      • 1...Bd1
        • 2.Qc7#
      • 1...Bb3
        • 2.Qc7#
      • 1...Ba4
        • 2.Qc7#
      • 1...g5
        • 2.Rf5#
      • 1...Rb3+!
    • 1.Kb7?
      • 1...Rxd2
        • 2.Qxd2#
      • 1...Rxd5
        • 2.d4#
      • 1...Bb1
        • 2.Qc7#
      • 1...Ra3
        • 2.d3#
      • 1...Rc3
        • 2.dxc3#
        • 2.d3#
      • 1...Re3
        • 2.dxe3#
      • 1...Rd4
        • 2.d3#
      • 1...Bd1
        • 2.Qc7#
      • 1...Bb3
        • 2.Qc7#
      • 1...Ba4
        • 2.Qc7#
      • 1...g5
        • 2.Rf5#
      • 1...Rb3+!
    • 1.Kb8?
      • 1...Rxd2
        • 2.Qxd2#
      • 1...Rxd5
        • 2.d4#
      • 1...Bb1
        • 2.Qc7#
      • 1...Ra3
        • 2.d3#
      • 1...Rc3
        • 2.dxc3#
        • 2.d3#
      • 1...Re3
        • 2.dxe3#
      • 1...Rd4
        • 2.d3#
      • 1...Bd1
        • 2.Qc7#
      • 1...Bb3
        • 2.Qc7#
      • 1...Ba4
        • 2.Qc7#
      • 1...g5
        • 2.Rf5#
      • 1...Rb3+!
    • 1.Qe1?
      • threat
        • 2.Qe4#
        • 2.Qe5#
      • 1...Rxd2
        • 2.Qxd2#
        • 2.Qe3#
        • 2.Qe5#
      • 1...Rxd5
        • 2.Qe3#
      • 1...Ra3
        • 2.Qe5#
      • 1...Rb3
        • 2.Qe5#
      • 1...Re3
        • 2.Qxe3#
        • 2.dxe3#
        • 2.fxe3#
      • 1...Rd4
        • 2.Qe3#
        • 2.Qe5#
      • 1...Rc3+!
  • Keys
    • 1.Kc8!
      • 1...Rc3+
        • 2.dxc3#
      • 1...Rxd2
        • 2.Qxd2#
      • 1...Rxd5
        • 2.d4#
      • 1...Bb1
        • 2.Qc7#
      • 1...Ra3
        • 2.d3#
      • 1...Rb3
        • 2.d3#
      • 1...Re3
        • 2.dxe3#
      • 1...Rd4
        • 2.d3#
      • 1...Bd1
        • 2.Qc7#
      • 1...Bb3
        • 2.Qc7#
      • 1...Ba4
        • 2.Qc7#
      • 1...g5
        • 2.Rf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • R(b);OGATE,P_SPINR(b),XP(B)::QAB(A),XR(b)
    • R(b);OGATE::QAB(A)+P(B)
    • R(b);CHECK,OGATE::QAB(A)+P(B),XR(b)
    • R(b);OGATE::P(B),XR(b)
    • R(b);OGATE,XR(E)::QAB(A)+P(B)
    • P(f);N_GUARD::R1(E)
  • Tries
    • Try
      • K(F);S_FLIGHT
      • Vars
        • R(b);OGATE,P_SPINR(b),XP(B)::QAB(A),XR(b)
        • R(b);OGATE,XR(E)::QAB(A)+P(B)
        • R(b);OGATE::QAB(A)+P(B)
        • R(b);OGATE::P(B),XR(b)
        • B(a);OGATE::QAB(A)
        • P(f);N_GUARD::R1(E)
      • Refutation
        • R(b);CHECK
    • Try
      • K(F);P-FLIGHT
      • Vars
        • R(b);OGATE,P_SPINR(b),XP(B)::QAB(A),XR(b)
        • R(b);OGATE,XR(E)::QAB(A)+P(B)
        • B(a);OGATE::QAB(A)
        • R(b);OGATE::QAB(A)+P(B)
        • R(b);OGATE::P(B),XR(b)
        • P(f);N_GUARD::R1(E)
      • Refutation
        • R(b);CHECK
    • Try
      • K(F);S_FLIGHT
      • Vars
        • R(b);OGATE,P_SPINR(b),XP(B)::QAB(A),XR(b)
        • R(b);OGATE,XR(E)::QAB(A)+P(B)
        • B(a);OGATE::QAB(A)
        • R(b);OGATE::QAB(A)+P(B)
        • R(b);OGATE::P(B),XR(b)
        • P(f);N_GUARD::R1(E)
      • Refutation
        • R(b);CHECK
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • R(b);N_GUARD,XR(E)::QAB1(A)
        • R(b);::QAB1(A)
      • Refutation
        • R(b);CHECK
  • Actual
    • K(F);P-FLIGHT
    • Vars
      • R(b);CHECK,OGATE::QAB(A)+P(B),XR(b)
      • R(b);OGATE,P_SPINR(b),XP(B)::QAB(A),XR(b)
      • R(b);OGATE,XR(E)::QAB(A)+P(B)
      • B(a);OGATE::QAB(A)
      • R(b);OGATE::QAB(A)+P(B)
      • R(b);OGATE::P(B),XR(b)
      • P(f);N_GUARD::R1(E)
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